I understand what you mean now. You're talking about a very good player, not necessarily HOF or even all star caliber, never making an impact other than putting up solid numbers on bad teams. You're basically calling him a Reggie Theus type player. A very good player, probably could have helped a good team, but had to star on ty teams that never did in the playoffs.
That makes more sense. But, still likely an exaggeration to call him "most" waste of talent ever.