I wanna add to what other users already answered that this problem is not created by federation, only exacerbated.
If I’m mod of a community and I ban your [email protected] account, I cannot stop you from creating, e.g. [email protected] and coming back. Most servers have some barriers against spam account creation in place, but I’d wager you could easily create a handful of accounts on a server until they start to grip.
Even completely centralized platforms such as Twitter and Reddit are the same. You can easily ban/block evade a couple times per timeframe.
I wanna add to what other users already answered that this problem is not created by federation, only exacerbated.
If I’m mod of a community and I ban your [email protected] account, I cannot stop you from creating, e.g. [email protected] and coming back. Most servers have some barriers against spam account creation in place, but I’d wager you could easily create a handful of accounts on a server until they start to grip.
Even completely centralized platforms such as Twitter and Reddit are the same. You can easily ban/block evade a couple times per timeframe.