First Off, I don't know how plausible this theory is to begin with. But if entropy can only be created and not destroyed wouldn't the big crunch take everything back to the start (destroy entropy). I guess a thought experiment where impossibly you take everything in the universe and smash it together including yourself. Is The 2nd law flawed in a way we don't know? Note that I don't really care about the plausibility of the big crunch but rather the question of entropy being completely valid.