>>
If people want to self-insert, there's nothing wrong with them modifying the material to feel more... happy?
It makes sense, there's no ill intention there. The problem comes with trolling with that content. There's no "fixed" or "correct" version.
Go ahead and make a black/white/yellow/purple version, it should be encouraged. We're all sharing content to get off on, race isn't an issue. But don't be an arsehole about it.
It's a case of trolls being trolls, not race. Don't let these guys start shit.