Obviously there's not a 1:1 relationship. And I never made such claim. I am saying that the people who read detailed journalism tend to have a higher reading level, e.g. they work in a job where reading and analysis is a daily part of their work, this would be considered white collar.
Please don't put words in my mouth when I never said there was a 1:1 relationship.
Plenty of people with their fancy college degree are incurious, and plenty of people that barely made it out of high school are curious.
It's an appealing shorthand, but it's not a great one.