I think that's true in the micro sense that the fringe techies and terminally online big tech-averse crowd had a moment where they could collectively choose a better way to communicate.

Sadly, convenience always wins, and most people need a better reason to "switch platforms" (which is, ironically, what moving your socials to atproto/fedi means). Together with the dismal state of general education on digital independence, such revolutions just won't happen for the overwhelming majority of internet users. The lack of GPG usage is a common example, but people don't even own their email domains :)