They don't care about that, as long as they can blame someone different than them. It also helps the narratives that keep the forever wars over there grinding on. Race wars to distract from class wars.
Feminist-washing and pinkwashing racism are some of liberals' classic signature moves.
Doing bigotry and calling it feminism is an essential liberal trait: terfs, islamophobes, and the like all do it.
it's just because calling other people cannibal savages is easier to disprove
This is why I'd never call myself a feminist, even if I'm for women's liberation, I'm not white enough. The main proponent in for the term are white women, and even if not a strict rule, white women are incapable of feminism.
I've been very shy about that label for this exact reason myself. Not only that, but even among a majority of mainstream liberal feminists that aren't explicitly TERFy, I feel like there is underlying bioessentialism in their form of feminism. As a black person in particular, womanist is usually what I'd call myself if I must.