For me, the content created by communities that is exclusively available on that site is really helpful to me. If possible I would definitely try and archive a few subreddits and write something to search and access it offline (sorta like https://en.wikipedia.org/wiki/Kiwix but for reddit).
Shit post volume for mindless scrolling and the little niche subs that Lemmy doesn’t look like it can sustain quite yet.
Of course the flip side of that coin is that the whole front page operates like a niche sub.