I have to repeat my most important concern about Nostr from ~3 months ago[1]: Nostr makes you forward data from strangers unencrypted. If anything unlawful which you forward for Nostr is ever found on your computer, or found transmitted from your computer, you'd have fun time to explain to the authorities how it even ended up on your machine, and why are you disseminating it.

Encryption is not trivially easy to introduce into this scheme, and it can't be too seamless. It's possible though, and I encourage the developers to work on that.