After hearing stories from wartime Japan and Germany, and America during the Civil War, I have a hypothesis that it may not have been outright common for groups of women to exist, outwardly representing the women's movement, but who actually promoted censorship and patriarchy, and tried to maintain male superiority over women.
@MENUMA432 I saw an article somewhere the other day about how women who are perceived as pretty or sexually attractive to men, from the perspective of other women, get more hate from those women than from men by multiple factors. I think 4 times higher at least or something. So women with low self esteem will attack the "sluts" and call them sluts and stupid and whores and stuff because they're trying to get rid of competition, even though it doesn't work and guys still pick the sexy girls and all the low self esteem girls end up doing is making hot girls lives hell for no reason.