Oddbean new post about login | logout I'm the end it doesn't really work. Information will spread. What's key is not being forced the see the replies of others imo.
Yes, npubs can "leak" information out of that place (as they can with DMs, audio/video chats or IRL meetings), but bots and trolls would have a difficult time coming in and causing havoc. It would make for a calmer, more-productive conversation. It's a whitelist concept, rather than a blacklist concept, and that is very attractive.