I believe some of the rich assholes really do see birth rates as a sort of global crisis. Mostly because it poses a threat to their bottom line. Less workers = less labor to exploit, less consumers to buy their shit, pay subscriptions or blast with ads. And a demographic shift where the size of the older generation is greater than the younger generation massively screws up social security systems that depend on taxes from the young to pay the benefits for the old. And, more nefariously - because parents necessarily consume more and become more reliable workers: when you’re living paycheck to paycheck you can’t afford to quit, take unpaid leave, turn up overtime or go on strike. But perhaps too, some may be experiencing the existential crisis that there is a real, natural limit to the growth of the human race, that we are not god-destined to just expand forever and ever, but rather finite in our place in the cosmos.