Lemmy is not immune to trolls, bad fait actors or propaganda - in fact, despite how bad reddit is, a lot of Lemmy instances are worse
I'm done, I've been banned for expressing a different opinion (without insulting or personally attacking anyone), I've been accused of evading a ban with multiple accounts (this is my only account I've ever had on any lemmy instance), I've had people selectively ignore my comments and accuse me of things which I never said, and I've had people ignore valid criticisms and keep attacking me.
Reddit has many issues with trolls, one-sided discussion, and just general bullshit, but many Lemmy instances are way worse. The newfound freedom of Lemmy has attracted many extremists, from both sides, and many of them are moderators, who are more than happy to remove any contrarian opinions. This results in discussions being echo chambers
2 months ago I had my main Reddit account banned because I reported someone for inciting violence. They literally said word for word "they should just go into Gaza and kill them all, women, children, all deserve death after today." I reported him and went on about my day only to find that I was permanently banned from Reddit, no appeals work and this on r/WorldNews not some weird niche subreddit.
This does not surprise me one bit from r worldnews. When I last used that sub (2021? Not sure actually), mod abuse was already rampant and correcting popular blatant misinformation, would get you voted down massively, even when you provided a solid source and explanation. A truly rotten sub. Animetitties (seriously) was a far better sub for following and discussing world news. At a certain point, there will have been no active mods with any integrity left in r worldnews and I suspect that that point was years ago. The whole reddit moderation system does seem fundamentally flawed, which was especially noticeable in the default subs.