Racism is a fascist belief.

No, it is not lmao. Racism predated fascism by centuries. It is reactionary, but not fascist. Not all reactionary beliefs are fascist. Fascism is a particularly form of reaction that arose out of imperialist capitalism's attempt to crush labor while racism has largely been part of capitalism since the beginning, if not earlier.

Countering a racist society with ‘ironic’ and insincere racism that doesn’t contain real hatred is engaging with a fascist belief - even if from the opposite direction.

Racism has absolutely nothing to do with hatred, but with a particular ethnic group, (in the context of this thread, people of European descent) holding hegemonic power over everyone else. With this understanding, we can see how "combating hate" doesn't actually do anything because hatred is an ephemeral emotion, not a system of dominance. The white supremacist society must be dismantled regardless whether or not the people who hold power (ie white people) hate everyone else. If anything, the hatred of this white supremacist society, expressed vulgarly as "fuck whitey," can be harnessed towards its destruction with the understanding that as the struggle progresses, "fuck whitey" gets refined into "fuck this white supremacist power structure."

Without hatred, you are wrestling in the mud with fascists. They love that shit. Just kill them instead.

Nobody here is wrestling in the mud with fascists. What the fuck does that even mean? Actual fascists just get banned.