I would argue a major difference between misinformation on some place like Lemmy and misinformation on Twitter, is that Musk as owner of Twitter is amplifying this misinformation. Elon Musk frequently replies to people spreading misinfo and shouts out their accounts.
I still use reddit from time to time, but I find the stuff i find here is of higher quality and more thoughtful. I would use Lemmy exclusively if it had all of the communities that i frequent on reddit, many of the things on here are tech-related and most things outside of the tech world don’t pop up in my feed. I feel I engage more, use more and actually learn more from Lemmy so overall I am quite impressed!