Most of the world is below replacement rate (~2.1 TFR), the rest will get there in a decade or two. Educated, empowered women delay having children, have less children, or no children. Holds across both developed and developing countries.
https://www.pewresearch.org/short-reads/2025/08/15/5-facts-a...
https://www.sas.upenn.edu/~jesusfv/Slides_London.pdf
https://www.visualcapitalist.com/cp/mapped-countries-by-fert...
Right, it looks pretty catastrophic for some areas (eg South Korea) if it doesn’t stabilize.
But I’m also skeptical of anything that extrapolates anything related to human behavior out 75 years.
The world, yes, but specific niches no. Look at the Mormons, or Nigeria, or Somalis in America at 3x the US birthrate.