It often feels like we as a society have sort of entered into a weird territory with a lot of these liberal changes. The societal structures that have worked in the past, while you may not like them, did work. We have sort of removed a lot of that previously structure that worked, for logical reasons of course, but we haven't really replaced it with structures that work equally well. Thus we have the very low fertility rate we have now.
The problem with social progress is that we do not really do it understanding the consequences long term. And then we run into these issues. I am not sure we can fix the problems these changes have brought with them faster than the demographic advantage can switch to those still are religious/conservatives who do not have similar dropping fertility rates.
Fertility wins in the end, not anything we write or reason about abstractly, no matter how logical or elegant those arguments may be.
I think because fertility wins in the end, political philosophies that are in competition over the long-term (decades or longer), need to take that into account, or they lose by default as their adherents decrease.