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
This is the best thing about federation.
If the Fediverse became really popular and I created a new alternative to Lemmy/Kbin that was significantly better than both, it would be way easier to gain the momentum required to become a real player in the field compared to trying to compete with Reddit when most people aren’t in the Fediverse yet.