I've certainly noticed the change. There are some posts lately that are indistinguishable from those on alt-right breeding grounds like 4chan and reddit. That's why I wasn't too gung-ho about persuading people to join Lemmy -- there were a lot of people on reddit I was hoping wouldn't come.

I've started using raddle more, which comes with its own problems, but at least I don't have to start by convincing people not to hate marginalized groups every time I open my inbox.