Isn't it just a protocol though? Anyone can chose to what degree they interact with it. Not unlike Bitcoin. I understand it as a bit of a democracy in that regard.
If you don't like full replace by fee, don't run it on your node. If you don't like a certain NIP, don't run it on your relay.
I really don't see the problem. Maybe I don't understand what you are saying, I am not a dev. You are, and I really am amazed by all the work you have done with Gossip. I use it every day, and thank you.
I could be wrong, but I think at its core nostr is really nothing more than passing json info over websockets to defy censorship. Anyone can do it however they want. Who cares?