Fraudulent Writing

This is an incredibly disturbing article about the rampant fraud in university paper writing.

The Shadow Scholar
The man who writes your students' papers tells his story

Three notes:
The author writes on all subjects in the humanities and social "sciences", but apparently not at all in math and science.
Students from public schools come to college barely or not at all literate.
If this author can write passing work in these subjects, including at the graduate level, without taking any classes in them, what does it say about the need for classes in these subjects?