Decentralization > uncensorability?

I doubt this is your stand. Nostr is built on IP. Lets suppose they can censor IP and DNS. From what I see, nostr already addresses this risk with its architecture. Again, you jump to solutions but haven't amswered my question.

What is the underlying problem that nostr needs to solve? What are the requirements to that solution? Is it to solve the problem that people want to edit their own posts, is it to optimize relay bandwidth or is it to be a decentralized protocol? I doubt it is any of these.

I see nostr's primary aim is to enable uncensorable communication with a minimalistic protocol design. Tell me why I'm wrong.