A good example: The Shakers were an intelligent, inventive, efficient, and well-disciplined people -- but, they were also "anti-natalists".
Last time I checked, there were only two very elderly Shaker women left alive. That was several years ago; Shakers are most likely extinct by now...
VERY familiar with the Shakers. One of their biggest communities was founded near my Dad's home town (Lebanon Springs, NY). Have visited the area many times over the years and seen several Shaker sites, including "Shaker Village". And have read much about them as well.
But I don't think they were "anti-natalists" in the sense this article means....they just felt sex was inherently sinful, even for procreation...not that man was evil.