Lemmy, in its current state, reminds me of a university online forum. It has a university-ish population of active users who seem reasonably well-educated, and you run into people with disproportionately varied interests and passions compared to the general population.

I joined last summer when I became annoyed by the reddit shenanigans and have never looked back. For me, at least, lemmy already has the critical mass needed to occupy my attention. After the initial reddit wave, the active user count dropped steadily from around 70k to 40k, but seems to be slowly rebounding now as it has climbed back to 50k or so recently.

I think one thing of note is that when people flood into the fediverse for whatever reason, there is a tendency for them to congregate at whatever is perceived as the most central instances. This can be devastating if the servers in question are not up to the task of a sudden influx. I am guilty of this myself. I initially opened an account at kbin.social which was swamped. As I learned how the fediverse works, I eventually settled on lemmy.ca, which is a middling size instance that seems quite stable.

I guess my worry, then, is if lemmy goes viral at some point, it may not be up to the task of dealing with all the people flooding in? Viral trends have an exponential growth pattern, so it only takes a few doublings before you're looking at a million users and beyond. At the moment, scalability worries me more than social concerns in terms of the future of lemmy. But I suppose that may, to some extent, be because it's much harder to predict how the latter will play out with a much larger network, so I am giving it the benefit of the doubt?