From my PoV so far it looks that subs which decided to join lemmy or fediverse did not become active in same way as on reddit. I'd guess that these communities

From my PoV so far it looks that subs which decided to join lemmy or fediverse did not become active in same way as on reddit. I'd guess that these communities are rather a 'rogue' spin-off of subreddits created by people who didn't like mods and how they ruled subs. It's also possible that only more tech-aware enthusiasts moved over while those who mainly provided content and activity didn't bother themselves with "alternatives" and exodus. They decided to stay (or don't do anything) and join the blackouts or whatever else these protests took form. Overall, I'm not surprised with what happen to reddit or even twitter. This crawling enshittification driven in most cases by the greed and power lust; I've seen this happen many times in the Polish part of the Internet and it looks like it's an inevitable stage in platform's life.