Earlier quoted context omitted.
> - Peak baby - 2013. [2] I think your source's claim that "The planet will never see more babies than it has in 2013" is open to question. To just use the US as an example: mainstream Americans have a declining fertility rate, and we have no reason to think that is going to reverse in the foreseeable future. Immigrants have higher fertility, but they tend to converge to the mainstream after a generation or two. So,…
The fact that these are still very much niche interests after many generations indicates that the social indoctrination processes needed to maintain such cultures are not scalable.
In 2023, Israel contained over 1.28 million ultra-Orthodox Jews, 13.5% of Israel’s population. It is estimated that by the end of this decade, it will be over 16%. [0] By shortly after 2065, it is estimated that 50% of Israeli children will be Haredi. [1] I think this is counterevidence to your claim - the social indoctrination processes necessary to maintain Israeli ultra-Orthodox Judaism have already scaled to over 1 million people, and are projected to scale much further than that
[0] https://www.timesofisrael.com/haredim-are-fastest-growing-po...