Oh, it already has taken off sufficiently. There are some 10-20 million users[0]. Like I just said in an adjacent comment I've been using it nearly-exclusively for almost 10 years now, myself. It's not built for "growth" or to "compete" with big corporate social media so it's all good. Whoever is interested can try it out for themselves. BTW I've been on the net since 1992 and can say with certainty, every new social technology is dominated by the fringes of culture at first because we're the ones who want to make our own place that isn't full of jerks. Like, fediverse wasn't taken over by any fringe group, it started on the fringes. We're happy to have anyone who isn't a jerk though, it's generally that simple.
Definitely pretty valid points- I'm surprised by how long it's been around I always considered it a covid thing. Society could definitely benefit from the right sort of fringe ideas and people at the moment.