Yeah, sometimes they do take kayfabe too far. I remember how they claimed Kurt Angle had like, completely destroyed his body and physically couldn't bring himself to wrestle, then next week, he was on TNA. (yes I follow wrestling entertainment and yes I'm aware what level of dork that makes me)
but he has completely destroyed his body.
the difference is that in TNA the shedule is 1/20th that of the gruling WWE road schedule.
so, even though his body is fucked, he wrestles far far less, and therefore can handle it a lot better.