Once again watching someone try to substitute cryptograpy for moderation, and I haven't got enough facepalm. (Even Picard hasn't got enough facepalm.)
It's a variant of the "fences makes good neighbors" fallacy. No, respect for privacy makes good neighbors. Physical fences _without_ social agreements escalate ala:
https://www.expatexchange.com/thread/202/3344190/Ecuador/Expats-Living-in-Ecuador/Why-all-the-fences