As people get more intelligent and smarter, the Ad business will die. I'm sure about it. In my whole life, there's no single ad that makes sense for me to see and click, because it's annoying. I love smart search results, not smart ad results.
There's a good HL Mencken quote about the likelihood of people getting collectively smarter: "No one in this world, so far as I know—and I have searched the records for years, and employed agents to help me—has ever lost money by underestimating the intelligence of the great masses of the plain people. Nor has anyone ever lost public office thereby. "
Therefore I believe that as our society reaches for further egalitarianism, this hierarchy of "intelligence" should flatten, imo towards people being more knowledgeable. Not like you need to take away people's Harvard PHDs to make sure every American has what they need to at least graduate highschool, or, you know, be able to read.
I don't necessarily agree that greater education leads to greater invulnerability to ads and the modern poisons in our society: most of my friends are smarter than me by many measures, and yet as far as I know I'm the only one not at least mildly addicted to Instagram and co., despite all of us often having conversations where we all seem to agree that that shits bad for you. Nah it takes something other than knowledge / educational privilege, i don't know what specifically, but something else.