Nostr kind 5 is a best effort approach and relies on both the client and the relay on observing the protocol rules. It is by no means perfect. Nothing is.
It will not save you in court.
It is no different to Facebook or Twitter deleting your posts on request but storing a backup on file.
The nostr protocol has an improvement proposal (NIP-09) that touches on Event Deletion (Kind 5).
https://github.com/nostr-protocol/nips/blob/master/09.md
Nostr kind 5 is a best effort approach and relies on both the client and the relay on observing the protocol rules.
It is by no means perfect. Nothing is.
It will not save you in court.
It is no different to Facebook or Twitter deleting your posts on request but storing a backup on file.
https://delete.nostr.com is a tool that uses NIP-09 (Kind 5) to
deletenostr notes.