I know that I’ve been blocked by some people because I only see some comments if I load Lemmy in a private (not signed in). This is likely because of my anger toward the genocide in Palestine last year, when I got a bit unhinged about what it would mean for the election in November. Oh well, I don’t care.
I haven’t been plagued by abusive users. Maybe try lurking for a bit to check the tone of communities before contributing. I find Lemmy welcoming. I gave up on Reddit in the mids of the last decade. We might approach web forums from very different places (example: I love the text-only Hacker News).
You’re creating the exact scenario OP bemoans.