I know, it’s an unpopular opinion. But for me Lemmy is not better than Reddit and Mastodon is not the New Twitter. They are something on reddit that I didn’t find on Lemmy. Here there are obviously less people and less community and it’s for the entire fediverse : the age of the population is incredibly high ! And for me the main subjects (politic, leftism etc…) is… sorry but … I’m not interested about that so its vers boring to see my lemmy or mastodon feed when 90% of the content are political-content, its for me the main problem of the fediverse.
The issue i see is that a huge influx of users came and tried to make lemmy like reddit.
So a large amount of niche communities started on a number of instances.
Whereas they organically grew on Reddit (ie, when /r/TV got too busy with The Boys posts, /r/TheBoys started as a community (these are just made up examples)).
I wish that lemmy had more concentrated communities on related instances (so lemmy.film.social is all about Movie communities). And communities would only specialise when the related generic community gets too busy.