You have to know that they’re doing this though. Suppose some troll is self-hosting, or part of a very small instance? You’d only know they’d do this if they told you

Would a two way block be even practically possible on a network like this? Whatever server they are on would see your posts, so all it would take is for that server to use a slightly modified version that doesn’t hide your posts to blocked users and they’d see them anyway.

Couldn’t someone vote multiple times anyway by just having a bunch of different accounts?