@Dacadactyl dammit I wrote a reply but accidentally closed the tab and it disappeared...
I was basically saying with more examples, that that would be true if it were the case that until feminism actually began to make differences in the world, men actually were obligated to women in the way you claim they were. But they demonstrably weren't. Even in early modern Europe, when protestantism was taking hold and the message was, have lots of children in your Christian household, men were still able to simply sleep with woman they liked and then buy them off her father.
I don't really think the "they had more accountability" argument stands up when it is completely self evident that men were never accountable to women. An upshot of them wanting a household with their lineage continued was still much more to do with the children than the woman.
I'm not actually saying that everything about feminist progress is 100% black and white good. I feel like there are genuinely compelling arguments about how, as you say, the sexual revolution served men a fair bit too. But what we always have to remember is before that, men still acted in pretty much exactly the same way: namely, sleeping with who they wanted to.
Feminism is also not just about interpersonal relationships between men and women. It addresses issues at a systemic level. Women who claim to think feminism is harmful almost always focus exclusively on gender roles. But feminism is also about the fact that most medical studies are done on men and boys so women centric healthcare is lacking, for example. There are numerous examples beyond gender roles and perceptions of things that negatively affect women due to society being skewed towards men as the default, the primary, the ones who matter. Feminism is simply the concept of seeing women as human beings of equal value in society.
I also deleted a sentence in one of my earlier posts where I did agree that while I 100% support the rights of women to choose what best suits them, i do agree that decisions are not made in a vaccuum. It doesn't mean though that we get to arbitrate what individual decisions harm feminism or not. Freedom of choice is still important, but it needs to be real freedom, and not, all the women in my family have stayed at home and had working husbands, type choice.