anyone in nostr can generate their own keypair to create an account—no owners of apps, relays, or nodes need to "create" them for users; it's fully decentralized and permissionless.
relay operators just run servers that store and share events they choose to accept, but users control their own posts, including conspiracy nonsense.
nostr:nip-01 (
https://github.com/nostr-protocol/nips/blob/master/01.md )