What's wrong with that?
It would be like bragging about the diversity of people that you listen to today, and then listing Bill O’Reilly, Alex Jones, Sean Hannity, and Tucker Carlson. Yes, that's a lot of work by a bunch of different people, but you're not really getting exposed to the full range of thought in our culture.
More seriously, reading these writers is really basic stuff for any humanities graduate curriculum...and the book under review is authored by a well-known Oxford don.