[rsynnott]

I mean, it's worth _considering_, but it does not appear to be true. See reddit; reddit has gone through a number of waves of banning abominable subreddits. In general the result is that the most extreme members create a nightmarish reddit clone which no-one else cares about, the rest disperse.

[nextlevelwizard]

How would you know when the very existence of these new silos is hidden from you?

This is like saying "our model recognizes 99% of the AI generated images", but it leave out that you don't know the actual amount since when your model does not recognize that an image in the wild was generated by AI you dont know that it was generated by an AI.

[rsynnott]

... I mean, it's not hidden at all. If you want (you probably do not; they are astonishingly obsessive and horrible) to find the alternative reddit clones that people fled to when fatpeoplehate or the Nazi subreddits or the worst of the TERF subreddits or whatever were banned, well, they're right there, they are not a secret.