I’ve noticed it in political discussions especially. I often find the nitty gritty of my political opinions at odds with much of the apparent consensus on both Reddit and Lemmy. But on Lemmy I generally find people to be a lot less dogmatic, and more open to constructive discussion, rather than repeating the same slogans over and over. Not that it doesn’t happen on Lemmy, but I can’t really remember the last time I heard someone say “It’s not a bug, it’s a feature” unironically.(I have heard “orphan crushing machine” thrown around a bit, but at least that one is kinda funny.)
Overall, the mainstream on Lemmy feels like an upgrade from Reddit, though I do miss more niche communities catering toward my interest.