I really want to exclusively switch to Lemmy, but as it stands I'll probably end up starting to use Reddit again as soon as the the vast majority of the blackout ends (I'm not gonna give in easily, but once it's mostly over, there's no point in me continuing).
The problem for me is that on Reddit even extremely niche communities had a substantial amount of members and activity, whereas Lemmy is smaller than Reddit, so everything scales down proportionally, meaning that suddenly communities that were niche on Reddit are infinitesimally tiny or even just absent on Lemmy. Like, there's no malazan community, elitedangerous and wheeloftime are dead, amiga is dead, and so on.
I actually got a ton of extremely high quality, positive interaction on the subreddits I was on, because I almost entirely stayed away from the really popular subreddits, and I'm losing all that moving to here, where the popular communities have higher quality interaction but the smaller communities have way worse interaction. Also, Reddit is a massive treasure-trove of useful niche information for me.