Certain regressive strains of feminism are just as gender essentialist as the patriarchy they claim to oppose - they just invert the value judgments. They take regressive notions like "if you have a penis, you're a man" and "men can't help themselves around women, it's just the way we are!" and instead of saying "this is why it's up to a woman to behave properly so she isn't raped" they say "this is why penises are evil."

(Funny enough, Andrea Dworkin, despite being the go-to example for many of a "man-hating feminist," fully supported transwomen and believed that SRS should be a guaranteed right)