And @Gargron was right in that no one can prevent racists from using Mastodon in terms of platform-wide scale.

He's right for the same reason you can't prevent racists from using email.

You can de-federate racists and block their servers. Which is what's actively being done.

And that makes Mastodon a better service than Twitter where, not only is it impossible to block racists en masse, Elon Musk is welcoming them with open arms.

But CMSWire didn't mention that 😉