I do think this is one pathway, and it has kind of been happening - we're seeing people increasingly stop participating 'open' social medias and retreating into

I do think this is one pathway, and it has kind of been happening - we're seeing people increasingly stop participating 'open' social medias and retreating into more sequestered communities with fewer, but enduring participants that you get to know, and who are united around care for some topic but also talk about other stuff. Discord servers are probably the most prominent of these just now. They have more in common with oldschool forums in the sense that you get to know the regulars, but are notoriously impenetrable if you're new and trying to search for information on some topic that's been covered in the past. But it's a start! Now that Discord is apparently opening up to ads, it remains to be seen whether that cultural shift will be able to hold or if people are going to be driven into even deeper hidey holes, like the freed humans in The Matrix who have to hide out deep in the earth from all the robots ;)