[dmix]

Exactly, it's just removing the pointless (and terrible UX) step of having to sign up again.

I imagined trying to explain to my mom why she'd have to signup for Mastadon again because the server she signed up with is gone or she got on one of the massive blacklists for engaging with the 'wrong' accounts.

[serverholic]

More than that, it puts your data into your hands. If someone kicks you off a server for whatever reason you still have your account and you can visit other servers. With mastodon you’re at the mercy of whoever owns the server.