No, not because of them. Although they're certainly not as safe as they look either. Nostr focuses too much on bitcoins, and when it comes to money it's a mistake to think that everyone is your friend, unless you're trying to gain trust and sell something. Like streams, or a podcast.

Nostr is also vulnerable to government propaganda groups. This can literally be either a network of AI accounts or real people with an audience they gather by handing out sats.