A couple of thoughts on this…
1) Sometimes guys who aren’t perceived as good teammates come to the right situation and become good if not great teammates. Wasn’t Dennis Johnson supposedly one example? Also, let’s keep in mind some of the stuff that supposedly legendary players have done to hurt their teams which we quickly forget. Paul Pierce technical fouled his way out of the last minute of a playoff game and showed up to the press conference joking around with a bandage around his face. Larry Bird broke his hand in a bar fight in the middle of the Eastern Conference Finals. Can you imagine what people would say if such a thing happened today?
2) With that said, I think it’s too easy to conclude that Cousins is some sort of locker room cancer. I’m not saying he isn’t, I’m just saying there isn’t clear proof on this. I haven’t watched him a ton, but he definitely did dog it on a couple of trips down the floor in Mexico City. The question is: Does he care about basketball and about winning? I’d submit that it’s impossible for anyone, even with his physical talents, to put up the numbers that he has in his career without giving a sh**. On this topic, note that Cousins added a 3-pointer to his repertoire in the offseason after inking a mammoth new contract. Point is, I think the criticism of this guy is too harsh.
3) I hear what people are saying about the fact that so few NBA champions have lacked superstars. But keep in mind that the rules of the game (literally) have changed. Most of the examples we cite are in a illegal defense world (not defensive 3-seconds), which heavily favored hero ball and isolation play over passing. It’s quite possible that in the current era, you don’t in fact need a super-duper star to win.