I'm not sure if you're referring to Mostro (nprofile…r8lk) or to p2p.band.
If you're asking about Mostro (nprofile…r8lk), it's very private and secure. Besides the blog negrunch (nprofile…gwrl) shared with you, you can also read this explanation:
https://mostro.network/docs-english/privacy.html
But if you're talking about logging in with your private key on p2p.band to create an order and just wait for someone to message you and carry out the exchange without escrow or any guarantee of fulfillment, I think that's a bad idea
