They're pro-“fertility talking points” at least, but rarely in favor of economic and social policies that encourage child rearing.

Yup. Bring up a tax to pay for prenatal, neonatal and pediatric care, for instance, and you’ll separate the folks who care about children from the ones who found a new silly thing to argue about on Twitter.

I think so too. What strikes me most about "pro fertility" people, particularly the SV type, is that they don't seem to particularly like kids, as in spending time with them, playing with them, deriving joy from them. They seem very enamoured with the kids-as-cogs-in-the-system, with "legacy" with all sorts of other silliness except for the kids as kids.