I agree that federation can be implemented badly; with emails the problem is that comunications are federated but identity is not. A possible half-assed soluti

I agree that federation can be implemented badly; with emails the problem is that comunications are federated but identity is not. A possible half-assed solution would be to have your identity be linked to a public key you can move between servers. Obviously non-bitcoin-like network will have nodes more important than others on which users will ends up relying. The solution is not to delete any kind of "centricity" but rather to make nodes easy to replace.