Great questions. I’m not an expert but I think there are lots of relays that all replicate, and most clients give you an option to chose if you want to change the defaults. So if people notice a relay is censoring their reputation and usage should tank in theory. Nostr is still young, but I haven’t heard of any censorship issues here and I follow lots of freedom of speech champions that have been censored elsewhere. This is our biggest weapon here, being uncensorable. Account legacy is about your nsec management. There must be good resources on this but I’m unfamiliar, I’m sure you’ll figure it out :)