I'm going to guess his next chapter is about how money ruined the media and politics, which is "why you shouldn't write about these things" -- because the people with the loudest voice have the most to gain from the polarization of the media. Again, this is pretty obvious. The loudest voice becomes the only one you hear in an echo chamber.
It was insightful the first time I read it from Socrates and Aristotle. But at this point it should be common knowledge for anyone interested in philosophy (literally: the study of knowledge).