> how to be suspicious of claims made in advertisements. That one class stuck with me for a long time. (This was in Melbourne, Australia sometime around 1988.)
FWIW, advertising and to a larger extent advocacy in 1988 and what is today are entirety different animals.
Though I do agree with your point. The number of college graduates does not equate to higher critical thinking of a nation's populace.
I did attend a journalism class almost a decade ago. Even though the powerful effects of mass media on people were likened to a magic bullet [0] It would be correct to assume that social media tech today has transcended this very capability and in more powerful ways than ever imaginable by its inventor.
[0] https://en.m.wikipedia.org/wiki/Hypodermic_needle_model