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I assume this is your opinion, but you present it as a scientifically proven fact.
I’ve been online since early 1990s and this is my repeated empirical experience that communities with a technical entry threshold self-select for technical users initially.
Most social network users are already hopelessly confused by the concept of federation and need to pick up an instance.
Are you suggesting this is some kind of modern usenet?
In a sense. There was a varying threshold technical bareer of entry to BBS, ARPANET/Internet, email, Usenet (uucp over dialup for early adopters), mailing lists, forums and communities like Hacker News, even early Reddit and Digg.