Because there’s lots of misogyny in the world, there is a demand for misogynist writing. There’s plenty such writing by men, but that’s by now boring and there’s probably too much supply. If a woman is doing it, though, there are bigger and better returns to it. Occupying a niche of this sort also gives you certain rhetorical advantages in generating controversy and responding to it. (See, a woman admits the truth! Or, how can I be anti-woman if I am one? And if you misjudge the reaction, you can claim the whole thing was a joke.)
Kieran Healy has a worthwhile post at Crooked Timber.
hence black conservatives, marxist economists, Log-Cabin Republicans, ex-gay fundamentalists, pacifist Marines, libertarian environmentalists, pro-life Democrats, or what have you.Anti-zionist and/or antisemitic Jews. (And one comment cites Michael Kinsley noting that such behavior needs to grow ever more extreme. Until we have Gilad Atzmon.
False consciousness. Self-haters. Lots of unsatisfactory ways to refer to them. They didn't create the environment in which they prosper in such niches. And if all we had to worry about was their bigotries, their relatively small numbers would render the threat impotent. Rather we justly worry about the certainty that the dominant group will appropriate their minority status as an alibi.