This has nothing to do with tomb vampires. Katherine was not in the tomb, Damon did NOT make her come ( If we were to take her word for it, she is here because of Stefan! not Damon - though I believe she is not here for Salvatores at all and has some other plan in action-) and she is the one who killed Caroline upon learning from Bonnie Damon had given her his blood to save her...

IF we are going to trace back, though... It all started with Emily. Bonnie as well as the tomb vampires exist now because
a) Katherine saved Emily's life at some point thus making Emily owe her
b) Emily made a deal with Damon to protect Katherine from being burned and no Damon did NOT ask for all the vamps to be saved, EMILY did that. He only asked Katherine to be saved.

So after waiting for 145 years and HONORING his part of the deal Damon came back to town to FREE KATHERINE. What did Emily do? She possessed her own grand grand child, BETRAYED Damon by not keeping to her word (who even told her he only cared about Katherine so he was willing to let the tomb vamps stay there even in that 1st attempt if it only got him Katherine back!) and then left her grand grand child all confused and a sitting duck to face an angry vampire in a berserker rage which was really meant for HER... So if Emily has agreed to just let Katherine out (we know NONE of the tomb vamps were in a condition to rush out and the seal could be put back into place after Katherine was removed!) Bonnie wouldn't have been bitten (and would only have the trauma of being possessed to deal with!) and the tomb vamps would still be sealed in (as frankly, out of all of the Bennett witches, she seems the one most eqipped to do that with no problems & mess-ups).

Then came Grams. They had all agreed the tomb would be opened and Damon would get Katherine and LEAVE TOWN with her and the rest of the tomb vamps would be burned off. So, the town would be vamp-free except for Stefan if Grams kept to HER part of the deal this time. But no. Grams had to just try and be clever and doublecross Damon too and try to lock him up in the tomb, even though he took Elena with him there (there was no certainty he'd let Elena go). This led to her having to do another spell to keep the seal down long enough to let Damon & Stefan out, and she died of overexertion while somehow messing up the spell and actually freeing all the tomb vamps. It was HER BETRAYAL and going against the original plan that resulted in her death & the tomb vamps being released.

And finally Bonnie doublecrossing Elena & Damon and not removing the spell off that vampire migraine giving machine meant that Tyler crashed the car and Caroline ended up severely injured. As Bonnie is not capable of doing a healing spell it was up to Damon to save Caroline's life, which he did, which was something Bonnie wanted him to do. Then Bonnie let Katherine (who id cruising in town freely in part because tomb vamps all died!) knew about Caroline which sealed her fate..

So, if we are going to play the "if" game, IF the Bennett Witches did not have such a history of not honoring a deal they make and double crossing people, A LOT of the bad things that happened would not have happened either. Damon has every right to come back to town to collect on a promise & deal he has been made years ago which he has honored diligently and he WAS willing to compromise and let the town be (not let the tomb vamps out). But no, Bennetts' will have to have everything their way and people should just accept being screwed over by them and give up. Because if they don't, then EVERYTHING is their fault all of a sudden...

I would say of all the Bennetts Emily's and Grams are the ones that caused the worst mess, not Bonnie's. But SHE needs to realize not everything is vampires' fault and how trying to control everything and have things your way to the point of doublecrossing people tends to backfire so she doesn't repeat the mistakes of her ancestors...

Btw, I am NOT saying Damon is an angel and has no fault, I am just pointing out that the Bennett side of things always gets forgotten. It is always "tomb vamps got released because Damon wanted them/Katherine out" well yes, Damon WANTED that tomb opened, but how that got so messed up and saw the release of the tomb vamps on the town (as well as Grams' death) was NOT really his fault. It is not his fault first Emily then Grams decided to double-cross him and so made the whole thing much more complicated than it had to be and ended up not having the opportunity to kill the tomb vamps/keep them sealed in. And he did NOT force Emily into that deal and it is understandable that after waiting 145 years and doing his part of the things he would want to get his payback. Why is he suppsoed to deal with the hand Emily dealt him and just give up?

It's not as if Elena went w/ Damon to go do something frivolous like get a corn dog. She was resistant at first saying "Whatever it is, I’m not interested.". But Damon made it clear in his tone of voice and facial expressions that he wasn't just coming to her about just anything, they're living in a place where doppelganger hi-jinx ensues, where vampires come out of tomb, where people find out they're witches: she knew this was about something important and possibly bad so she went with him. Elena going with Damon doesn't equal Elena forgiving Damon, she just wants to be kept in the loop.

This.Just like Jeremy not killing him it doesn't mean he has forgiven him.

And while this isn't exactly ON the heads of the Salvatore brothers, and Bonnie needs to come to terms with her own choices that nobody asked her to do in this matter, the tomb thing probably still wouldn't have gone the same way. Even if they'd kidnapped Bonnie to compel Grandma to open the door, and somehow convinced them to get to the tomb, there would have been no reason for Elena to rush in there and Stefan to go after her had the Salvatore brothers not been there in the first place. Bonnie is a kid, so I'll put up with some temporary blame displacement on this front but eventually she's going to need to own up to her own choices and accept that her grandmother also made a choice without telling her what the options were. Still, to say this all would have gone down the same way is just not true. No one knows exactly what would have happened had Anna, Isobel, and John been left to their own devices. I don't know if Isobel would have come like she did- had no one ever gotten out of the tomb (which is there is no guarantee they would have without the Salvatores being there) Katherine might not have sent John and Isobel to town to kill them. But a lot of what DID happen, that scarred and changed Bonnie, is because Damon was on the front lines of this with Stefan and Elena chasing at his heels (and I find it weird that the only thing that convinced Stefan and Bonnie herself to even open the tomb door was Elena saying "We've got to let Damon get Katherine". Stefan was all about letting her chill in there eternally, lol, and Bonnie hasn't even acknowledged that). And much of it was also because of what Damon directly and deliberately caused.

For everyone who is on the Bonnie bandwagon of 'everything is Damon's fault'. That's not true at all, everything would've happened the same way had Damon not shown up. He might've speed things along but Anna would've come and opened the tomb, Isobel would've come as well as John, and Katherine would've shown up and killed Caroline. He was more the catalyst but he's not the reason behind everything bad that happens in Mystic Falls, as much as some people would like him to be.

For people that want Damon to be redeemed, it's obviously going to take a while. I don't think you would believe it if Damon was all of a sudden all happy and sunshine and puppies and eating forest animals. Plus, I don't ever want him to be like that, I love Damon no apologies, is who he is and you can take it or you can leave it. We already have the good brother, Damon can be bad and have redeeming qualities.

I'm loving the Jeremy/Damon relationship, because Jeremy is just as effed up as Damon is. And they share this bond over that. They constantly feel out of place, and though Damon essentially killed him, I think Jeremy has almost grudging respect for him. Plus I love the chemistry!

Stefan/Caroline, OMG SHOW PLEASE LET THIS HAPPEN. Stefan was so interesting and fun around her, the way he is around Damon when they are snarky. That hug scene was amazing, and I love that they are hanging out next week as well

But you are saying the BROTHERS, this is very different to it's all Damon's fault.