No. Federation is the wrong decentralization model for anyone worried about malicious state actors. Just like email encryption, it doesn't matter how secure you/your server is, you still need to rely on the weakest link on the chain and that is simply unacceptable.
If you want to have secure social media, we need to move away from Federation and we will have to build a fully distributed network where data only lives at the edge nodes and participants can only communicate after exchanging their own personal keys.
Anything else is just infosec cosplaying.