It seems to me that development in social networks, in some ways, is mimicking the IRL social network.

IRL society is growing more atomized over time. In the digital realm, people are splitting off into different social networks.

NOSTR, X, Mastodon, Bluesky, Facebook, etc. It seems to me that the number of alternate social networks is contining to grow. When just a few short years ago it was only Facebook and Twitter.