Earlier quoted context omitted.
This is a big part of the point of urbit: there is no difference between an instance and a user . If a star or galaxy wants to refuse to route to a planet, they can. A planet can then look for another star or galaxy which will route packets for them. Also, if a planet ends up on another planet's personal banlist, that's it: the identities are durable and immutable, no amount of moving around will evade the ban. The a…
Still not following how this is different from Mastodon. Some users run their own instance (= planet), which cannot be "banned" by ordinary Mastodon means; you can only refuse to peer with it. Some users have accounts on someone else's instance, which can be banned by the admin of the instance. If you start tooting, I dunno, reactionary pro-slavery nonsense that takes asymmetrically more effort to refute than to clai…
In mastodon, people all live in big collectivist housings centered around a project, If you get kicked out you become homeless, or you need to start your own collective, where you will be initially alone
In urbit, people all live in individual houses, where they can invite friends over. People can ban you from their house, but you can't get kicked out of your own house