The media obfuscation matrix, since I could design one, it is doable.
It *might* just require a lot of work.
But ultimately totally doable.
You could even target one person or a handful of people if you have enough control to prevent random encounters with people outside the conspiracy.
I dunno, like VIP protection kinda thing. Blind the pharaoh’s eyes. I am not sure. Just a malicious social science experiment?
Practical uses for people who are nice, would be to blind sensitive people to the world at large who might have severe reactions including suicide.