Some of these observations aren't particularly surprising, but this line really took me out of it:
Yes, I know some texts, especially in the sciences, are expensive. However, the books I assign are low-priced. All texts combined for one of my courses is between $35-$100 and they still don’t buy them.
The implication that for one course (of which they have multiple in a year, over four years), students can be expected to spend up to $100 for textbooks (and the author thinks this is low-priced!) is astonishing and shows a profound disconnect with the actual financial situation of students. Of course, many will just use libgen or get second-hand copies, but these things are thwarted by incremental releases with just enough changes to make them infeasible for use in the course.