If this were a centralised platform, I would report the account and forget about it. But on NOSTR there is no central authority. I am tempted to post replies to each message they post linking to my scam alert post, but this would be nearly impossible to maintain in the long term.
I took the time and effort, and have the technical capabilities to verify a person, but not everybody does. In this decentralised world, scammers are free to scam unimpeded, bar the few kickbacks they get from people like me.
I was theoretically comfortable with this concept until this event.