/threadWB is absolutely past his prime, and that was not an uncommon opinion before this fight. He's 36, has been competing since 99, and has struggled with injury. It's not revisionist history, it's simply the case.
I think he's too small for MW and it's not like he's one of the strong welterweights, he'd have too big a strength disadvantage. He can still make another run at WW with a couple wins in a rowMaking weight is probably hell for him especially at 36. He should give MW a try and if that fails then it is most likely over.