Good take; I agree. That said, history on his side w/regard to his injury (i.e., he probably should overcome it) and he is young. If he has a big year, though, expect him to try and get out. Many don't like to hear this, but with star players the team doesn't hold all of the cards. Players can force their way out if they're good enough and angry enough.
Re Rex, I suspect that there's a little bit of CYA given that the staff pushed him to play when he wasn't ready. He shouldn't have been playing early in the season; that's clear now.