The Return of Patriarchy

I'm not usually a fan of Foreign Affairs, as I think they're a little too fluffy, but that such an article is appearing there means that maybe reality is beginning to enter the ZeitGeist, namely, that the "family valued", aka the patriarchal, will inherit the Earth. I'm not sure why "inclined to breed" and "Patriarchal" are necessarily entwined, unless it's simply that rearing children properly takes so feminine attention compared to other activities. Believing as I do that people should aim for three children so as to err on the right side of 2.1 children, I still can't quite make the leap that this means "patriarchy" and traditional religion as such, but the dual theses are interesting:

1. In any region, cultural conservatives literally inherit the region by default, as they outbreed their liberal contemporaries.
2. Socialism inevitably causes demographic collapse, due to the State taking on the role normally played by the Family and thereby reducing marginal incentives to breed.

What's funny is that the second thesis, which is at once the more striking and the more important, is buried within an article supposedly about the first. Memetic engineering?