censorship doesn't exist on a private website. You either follow their Terms of Service or agan, you can GTFO.
But even if it was just a money decision instead of a idealogy one, think about it. It's not possible to coexist peacefully with white nationalists/racists. They're not going to be happy until their bigotry is codified and in no universe ever are minorities ever going to peaceably give up their rights to become second class citizens or worse. The notion of equality and white nationalism/racism will never be at peace with each other. So it's just a question of which will win. Free speech does not protect fighting words, and telling a minority that you're not even classified as human seems like fighting words to me. So it's just a matter of time before this comes to blows. The south may rise again...only to be smacked down again. Maybe we'll have the good sense to keep them down this time instead of allowing them to continue to fester.