If anyone wants, I can set up a CNAME or something for @is.youronly.one so those interested can get a cool username. No pointing/moving the entire domain to a different nameserver though.
Imagine @bella@is.youronly.one @edward@is.youronly.one
The AI Imagery Labeler is too "pervasive". If an account posts or self-identifies at least once an image, and they see it, it adds a permanent label.
I think it's the limitation of the Moderation / Label system, it is account–based.