I’ve seen the something similar on Mastodon. It’s become colonized by some of the worst of Twitter’s offal. A lot of them moved over to Bluesky, but I’ve seen a return since that platform’s shittiness finally emerged. Negative and fear-mongering news posts as well as entitled snark. It’s still better than the alternatives, but I’m starting to think that maybe the algorithms were only part of the overall problem… But at least I have the means to moderate what I see.