> avert catastrophe
Catastrophe, you mean like thousands of radicalized people meeting securely in secret online to disrupt an objectively legitimate thing?
I would like more widespread penetration of critical thinking (such as teaching people to pattern-match on the most common fallacious techniques used by cults, conspiracy theorists, propagandists, modern snake-oil salesmen, and other ne'er-do-wells) before we deploy some "mass security recommendation" that would enable people to more comfortably plan things like firebombing vaccination centers based on secretly-exchanged nonsense. I mean, isn't that why "the authorities" (assuming they are good actors, which is of course an unknown) are nervous about pervasive, easily-accessible security?
Fortunately, it seems like most bad actors are idiots who have zero qualms about insecurely broadcasting their thoughts on social media leading up to their committing of despicable acts. But your efforts might make such "precognitive noise" "secure by default".
(In principle, I agree with you. This Martin Fowler piece on privacy, I consider seminal: https://martinfowler.com/articles/bothersome-privacy.html I'm just saying that no single technology seems to be a universally-satisfying panacea.)