I like the idea as a conceptual theory, but unfortunately, society doesn’t cooperate in such an ideal way.
The problem is this could unite the psychopaths into an underground clique who feed off each other’s legends. There will always be groups keeping these names and acquaintances revealing information. When 99% of society complies, the 1% band together to keep these legends(sic) alive and instead of being painted as just a nutjob, they now achieve a darker, mysterious, legendary status among others of like mind.
Well stated.
Then make it a crime. A serious one, that is prosecuted. "Stating The Name Of The Banished, First Degree, Felony".