I’m one of those Reddit refugees. I can’t say anything about how things were before I got here, but I would like to add that I treat Lemmy a whole lot different from Reddit. When I joined there was plenty of talk about the lack of content, people only upvoting but not commenting, that kind of thing.
So I took this as a sign that I should be more of a participant and not the three-posts-to-my-name lurker that I was at Reddit. And I saw similar motivations with other users. So I do hope that at least part of the refugees have added a positive influence, and more so than they ever did when they were still using Reddit.