As I understand it, one of the major issues with moving to e.g. Mastodon is that the Fediverse doesn’t implement blocking in a way that you’d expect, at all. It’s effectively impossible to block someone the way we’re used to blocking in places like Twitter, Instagram.
I have also heard a lot of stories from Black folks about anti-Black sentiment on Mastodon.
Yeah, it’s very sad.
The core of the issue is that it’s too easy for us privileged folks to suggest things like - and I’m not trying to pick on you at all here - that vulnerable people stay in any sort of “self-enforced walled garden” rather than robust moderation tools and the human resources to use them to their full potential.