Or maybe TPTB see it as if Red has more respect towards Liz and her abilities as an agent and profiler now?
I know that would be stupid because I doubt he ever thought her stupid...
I bet his POV changed completely as well. He can never trust her, believe her anymore. Who could blame him. But maybe she can't either although he never TOLD her wrong information. He just let her believe what she was so convinced to have figured out.