I made the hard switch with a lot of other users on June 13, 2023. I haven't looked back. It was a bit weird to wrap my head around lemmy and federation at first. Lemmy also grew astronomically in those initial few months. More communities opened up, etc. A lot of those communities have died off, but the point I'm trying to make is that there is more than enough content here, if you look for it.
Another commentator points out ComMuNisT propaganda; I don't find it that bad. there's a couple communities that are tankies, or definitely hard left. There's also a lot of middle ground. I do find Lemmy more left leaning than Reddit, and much less likely to tolerate people with nationalistic views, but, as with all things internet, vote with your feet. Don't like it, then leave.
Overall, Lemmy is a lot more chill and I encounter a lot less persnickety users on here.