Yeah it's kind of hard to understand how someone can argue this without giving any examples. What would be an example of a civilization that's been destroyed by "modern liberal society and feminism"? "Modern" implies relatively recent, but I can't think of any civilizations that have collapsed recently. There are certainly people claiming that a collapse is imminent, but that's not a new thing either, and even if I were going to accept the premise that it will happen soon I still wouldn't agree with those as the most likely causes (and there isn't any objective way to know right now given that it hasn't happened yet).

I think there is a crisis coming. It is not likely to be terminal, in and of itself, the immediate problem is that all the thing that leftist like such as public schools, higher ed, and the welfare state are going to become a lot harder to maintain thanks to demographic issues.

"Feminism" is not one thing, I mean, women are 50% of the population and they have very different beliefs, experiences, interests, etc. Often "feminism" is an expression of "individualism" and many of the major social changes have been driven by capital and the empire: I mean, a woman who stays home is not paying taxes on the fruits of her labor, she is not driving up stock market prices and making billionaires richer. I think there's not a lot of understanding that other career paths are possible. One of my friends had a child at age 19, spent some time living in a tent, worked in food service, but then got a masters in teaching and now works as an educator and union steward. And her daughter was off on her own at an age where some other women are stuggling with IVF and miscarriages. I know another teen mom who got an accounting degree, went down to New Jersey and became an experienced corporate accountant, and now she does the books for a well-regarded regional bank.

I believe in 50 years there is going to be more talk about duty and responsibility (which can be feminine, masculine or neither) and less about individual rights. Either our culture changes or there will be a rupture in which people will turn their backs on everything our culture stood for.