I think this is, in part, what the article is arguing. Community, and multi-generational culture and tradition, were a technology which helped populations thrive in what we now consider abject poverty. As the world gets wealthier, due to more recent technologies like widespread markets, staying in the same place and interacting with only the same 100-500 people for one's whole life is no longer something that almost everyone has to do, which explodes the basis for those earlier techs.

With TFR rapidly falling, current and future children are much less likely to even have any family other than parents, which cuts out another pillar supporting community and tradition, too.

I don't have a pat answer or know where this is going, but--assuming humanity survives--unless we want to turn into Asimov's Spacers, we'll have to find something to care about.