Actually he's become all the things you state as a shot fighter.

And you can see how he ended up there,he started buying in to his own hype machine. The rap record was a sign of it coming. Putting together the Ruiz fight was a billboard.
It said to me, he didnt really want to be great anymore,he wanted you to think he was. When the publicity outreaches the desire,your fighter is in serious trouble.
Thankfully for Roy, it happened so late in his career, it really wont affect his legacy much. De La Hoya is sort of the same way, though I think Oscar's done a better job of tainting his legacy then Roy. Mosely is heading there rapidly. Hopkins suprisingly hasnt found that path, but thats why he should quit right now.
All of those guys where gods at some point,but, quit while you still are a god.
Nobody wants to remember Ali/Berbick or Ali/Holmes