alt Hacker NewsFT's "Why birth rates are falling everywhere all at once" was published, and discussed, recently:
https://news.ycombinator.com/item?id=48168928
https://www.ft.com/content/fba35eca-df3a-4ad6-b42d-eb08eb7c9...
Spoiler: smartphones, social media, housing.
Also it’s not ok anymore to rape/get married to 13yo girls.
And now with a smartphone every girl knows that it is not ok.