The problem with nostr is that it obliterates plausible deniability. A bad post from another social network can be screenshotted but you can always claim said screenshot was photoshopped or “AI did it”. Your notes in nostr get signed with your unique identity so anyone who preserves the note payload (or the raw json event as some clients put it) can prove any time in the future that you said what you did and there was no tampering with the evidence. That is a bigger guarantee than “oh here is the archive.org snapshot” because even those require that you trust an entity to be honest, meanwhile a nostr archive only requires that you trust… maths.