How is lemmy going to avoid the fate of the last reddit alternative (voat)? Voat attracted the communities banned from reddit, e.g the worst of the worst: jailbait, creepshots, beatingwomen, etc. The users most interested in an alternative to reddit are on average, the exact wrong type of user to help with the growth of a healthy community. I don't see any information on how being "federated" solves the hard problem…
Nothing wrong with communities like that as long as you keep them segregated like reddit does with each of its subreddits. If those start creeping into your politics, memes, and video game subreddits, then yeah you’ve got a rough problem.
Which wasn't enough as I understand since those communities would en-mass attack other communities that they disagreed with.