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Kibbutzim in Israel from the 40s-80s tried a fairly radical project of communal child-rearing. It failed when the generation raised there rejected the choice to continue the project.

Viz: https://www.theguardian.com/lifeandstyle/2011/feb/19/kibbutz...

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It was at least a good source for psychological studies. In relation to the article discussed, one of the effects this had was reducing marriage rates.

The theorized reason is these children all grew together and therefore had sexual aversion similar to siblings

But children spend a lot of time together if they attend nursery/preschool as well. And that does not seem to be producing the problem.

These children spent all their time with each other, including days and nights, for 18 years, having only a hour or two with their parents a day.

It's called the Westermarck Effect, but with anything in Psychology you can take it with a grain of salt

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