This is why targeted media and advertisement is a bad idea.
It makes it incredibly easy to test people and put them into information silos where what you see is not what I see.
Yeah sucks back in the day on nationalized television one add would run cross country, but at least then you knew it was going to be scrutinized by a wide swath of individuals. Or maybe the segregation of information was not as widely considered then.
But now? We've seen how platforms can engage certain people and even cause mental disability through force feeding insane garbage at them. And the rest of us get to suffer for it, while being blissly unawares as to why.