I haven't read it.

The claim is silly. In 1992 a Calculus I professor showed me the coursework he was allowed to cover that year and the coursework he covered in 1982. It was 5-10%. He was forced to grade on a curve because the department mandated a certain pass rate. All of this was done because students were dropping out of the class (ie: depriving the school of funds), long before any other motives entered the scene.

One teacher, one class, one school, 33 years ago.

"Overblown" seems wildly off base.

Again, didn't read it.