It's been ages since I read her, and both times were for a world history class and political science 101. If I recall, she was critical of contemporary feminist movements because as products of bourgeois society, they were nevertheless upholding a lot of bourgeois values, that they would only soften the effects of gender oppression but not fully fight it, and that because it was largely led by upper- and middle-class women, the movement was nevertheless condescending toward working-class women. Another criticism was that bourgeois feminism was still promoting the nuclear family ideal that was a part of the capitalist social order.
She advocated a communal family unit, as opposed to the nuclear family unit comprising of monogamous husband and wife and their kids, which she was very much in favor of abandoning. This went hand in hand with her advocacy of free love, views against the institution of marriage, and of developing new views on sexuality.
Needless to say, she was quite unpopular, with one classmate (an Air Force ROTC guy) in my history class denouncing her writings with the label of "propaganda" (HURR DURR
), a Vietnamese girl in my polsci class saying that her views along with those held by socialists in general were absurd (human nature guise
), and even one of the TA's for the polsci class (not the one for my discussion section) called Kollontai a "crazy communist bitch" (
jokingly, but even as a joke, it was very uncalled for) during a review section. Haters gonna hate, and they can go frag themselves. I'm a fan, personally.