hachyderm.io is one of the many independent Mastodon servers you can use to participate in the fediverse.
Hachyderm is a safe space, LGBTQIA+ and BLM, primarily comprised of tech industry professionals world wide. Note that many non-user account types have restrictions - please see our About page.
I don't know or care whether what's his name is terf, or white supremacist, or whatever. It doesn't matter. He's creating a space that caters to them, and that's functionally the same thing.