"Some feminists"

Andrew Sullivan says, defending his assertion that we live in a "male-loathing" culture:

The point I was trying to make is that some feminists have tried to problematize maleness as such, without making the significant distinctions my reader rightly highlights.

So, uh, which feminists are those? I can think of a few that he might be thinking of, but they certainly haven't influenced my thinking much. Indeed, I seem to hear a lot of talk about the enforcement of masculinity and femininity being generally oppressive and anti-feminist. Are there really enough - and influential enough - feminists who dismiss "maleness as such" that they have created a whole male-loathing culture?