npub1cmgqvz7xr07euwkum3mjghjqcu4d3k2fcyf6g4uwwe5ggnd6fetq0wrzd2 (npub1cmg…rzd2) There isn't really a hook with mass appeal. I'm guessing most reasons that drew the current user base to the Fediverse are only relevant to a particular Internet subculture, as existed in smaller numbers back in the late 90s and early 2000s.
I think the Fediverse, as it works currently, is more likely to attract the type of people who would have wound up on IRC and Usenet, not necessarily those who were perfectly happy with things like web chat and email as they did the job.