It is probably due to a number of people stopping using their alts after some instance hopping.
Also a few people who came to see how it was, and weren’t attracted enough to become regular visitors.
Curious to see at which number we’ll stabilize.
Next peak will probably happen after either major features release (e.g. exhaustive mod tools allowing reluctant communities to move from Reddit) or the next Reddit fuck up (e.g. removing old.reddit)
Stats on each server: https://lemmy.fediverse.observer/list
Depends. My main community on Reddit was effectively a link aggregate for a niche hobby that’s well over a million subscribers at this point. And when the reddit blackout happened, it became extremely clear that there isn’t another community out there that aggregates just as much content as they have there.
Lemmy just doesn’t have the tools in terms of tagging and wiki to be able to replace what they’ve got yet.