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 a problem on a ton of different sites, not just Lemmy. And the ones that are not like this tend to be echo chambers for alt-right racist and anti-LGBT bullshit. It’s impossible to have a civilized discussion these days.