Great advice! Much better then keeping a list of books you want to read, which in my case rarely includes stuff/topics I know nothing about.
I really see a filter bubble-effect here. The stuff I get recommended (books, podcasts, documentaries) is manly based on what I have read/viewed/listen to. According to your principal they should be based on stuff I have never read/viewed/listen to :)
Summary: great advice, starting the list now!