For people that enjoy using ~~Arch btw~~ Linux, we're good yeah. Although occasionally some of us will die or whatever, and we need to have some level of growth or else accept that we will pretty much just shrink from now onwards. i.e., people talk as if we will go mainstream, or rather as if content will spring up magically from nowhere. If we want the small niches like Reddit has, we would need the userbase first. And to get that, we'd have to ditch our toxicity issues, make the UI more functional, and above all else make better moderation tools. Which I am doubtful will happen as the Lemmy devs seem happy with their current pacing and direction of changes - that's 99% fine with me btw, as it's theirs to do with whatever they please; though I am all the more happy to now see the likes of PieFed grow much quicker, even though it started out so very much further behind.
Fair point about PieFed being extremely tiny, and there are only 3 of them that are open to the public to join (https://join.piefed.social/try/) - though I am somewhat surprised to see the number of users for Mbin being so low. Yeah, I suppose they must be going back to Reddit, or perhaps Bluesky, or something else.
I am not sure how much to worry about the number of instances - on the one hand the long-anticipated 0.19.6 software release came out just today, which should fix the federation issues with Lemmy.World for many of them. On the other hand, smaller instances weren't likely to want to pull down the entirety of the Fediverse to begin with, as an actual multi-user one (even if on the small side, like Discuss.Online or Aussie.Zone) would, plus once gone, wouldn't we expect them to never come back, i.e. regardless of the software release today? So whatever turned them away... it would have been interesting to have known (though introverts would be the last to have offered such:-).
[Breathes in...] it's a breath of fresh air.