Possibly unpopular opinion: Fragmentation is good, as it means there are options for leaving a community behind. Fragmentation and competition are synonyms, and generally competition is good.

Lemmy definitely won't kill reddit the same way mastodon won't kill twitter, but I don't want it to. I just want it them to be successful enough to be a viable alternative when someone like Spez or Elon think they don't need to listen to their users.