We're just going to fundamentally disagree here. I can't reconcile or warp my mind enough to understand how someone who doesn't old any racial biases can turn around and yell racist things.
As an attorney, I can warp my mind, so I'll give it a try.
I think what he's saying is "Listen, everybody in America has been exposed to racist language. We know what it looks like. We know the slurs, the expressions, whatever. And, we know it can get in the head of certain players. It's similar to KG attacking Charlie V. about cancer. It's a potential soft spot, so I'm going to exploit it. I don't believe Black players are subhuman. That's a ridiculous sentiment. But, I'm willing to say anything to help get my team a win, and if that means mimic-ing racists to get under Lebron's skin, then that's a price I'm willing to pay".
So, that's the argument. It would make me ask the question, though: how off-kilter must a fan be to degrade himself to hurling racial slurs -- risking permanent expulsion from the Garden in the process -- just to get inside an opponent's head?