> But ramping up the birth rate? Only three ways to pull that off: straight-up tank women's rights across the board, socialize childcare big-time, or just smash the current political system to bits and build something better.
Actually it's probably more about smashing the cultural and economic system. IMHO the problem with fertility isn't so much with "women's rights" or the "political system" per se, but capitalism (including capitalism-inflected feminism that idealizes careers, which is pretty much all mainstream feminism).
Under the current system you exist to be maximally exploited to increase profits (ideally consuming all your capacity, including that which you'd use to reproduce and raise children), and childcare (socialized or no) is a foolish attempt to solve that problem with more of the problem (and of course that doesn't actually work).
The solution is a system the allocates a significant fraction of everyone's labor to cultural continuity (reproduction, child-rearing, and civic engagement), which would require a significant re-ordering of priorities.