Compared to Reddit, it's pretty empty still. On Reddit I literally never saw a post twice on my subscribed feed.
Now I'm subscribed to roughly the same number of communities and it takes 2-3 days for my feed to completely renew... Many of the subreddits I used to frequent still don't even exist on Lemmy, despite them being pretty popular over on Reddit.
There are pros and consc to having either large or small communities. Having many traffics is good to generate discussions. But then on the other hand, you encounter more idiots as a result.