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.
Our kids went to summer camp a mile from the Hancock Shaker Village in western MA. (In fact, the Shakers harvested ice for their in-ground ice house -- from the pond where the camp is/was.
We visited the village several times a year. I particularly admired their 3-level barn -- set into a hillside:
Top level: wagons brought fodder in from the fields
Mid-level: the cows fed on the fodder which dropped down through the center.
Bottom Level: Wagons loaded up the manure that dropped down from the mid-level -- and hauled it back out to re-fertilize the fields...
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In many, many ways, the Shakers were admirably clever; too bad they allowed that gene pool to run dry...