As well written and funny as the article is it still finds itself in a tunnel vision scenario because if the population is rising continuously and no one wants to have kids anymore then where are all these extra kids coming from?
If the state is not providing "insurance" the family has to.
On the other hand, the taxi drivers I remember talking to about children, had all a certain (non-western) background, and they had (as far as I remember) 2, 4, 3, 8 children, respectively.
We're now in the people living longer stage.
Hans Rosling did a simple demonstration of this with boxes over a decade ago.
https://www.ted.com/talks/hans_rosling_global_population_gro...
edit: better illustration of the point, still Hans with Boxes here: