I hadn't heard of the comments before today. I'm a big Bird fan, being up here in Massachusetts. I think the comments aren't particularly diplomatic, but they're not particularly offensive, either. I don't think anyone can deny that at the pro level, the vast majority of the players are black. But as others have said, so what? He was insulted when defended by white players? Again, so what? I think that was supposed to be a complement to black players, but honestly it sounds kind of dumb to me.
As Bron or 'Melo said, if you can play the game, nobody cares what color you are.
Then again, if Isaiah Thomas were white, he'd be just another average General Manager.