Once upon a time, only swivel-eyed right-wing commentators, Big Tech blowhards and ultra-right wing politicians were exercised by the issue of plummeting birth rates. Tesla CEO and father of 14 Elon Musk once called it “the biggest danger civilization faces by far” and claimed to be doing his best to personally solve it. Turkish president Recep Tayyip Erdoğan labelled his country’s historically low birth rate an “existential threat” and has pushed for women to have three…