The book's title is a nod to the Roger Waters album/song that deals with the same theme.
Quote from Postman according to wikipedia[0]:
"the level of sensibility required to appreciate the music of Roger Waters is both different and lower than what is required to appreciate, let us say, a Chopin étude."
Ouch.
I actually got the album when it came out, and was roughly aware of the concept and the book from reviews in the music press. Had I known that it was comparing Orwell and Huxley I'd have definitely made the effort to read more. But this was before the internet so it wasn't easy (you had to do things like going to a public library), so technological progress is not all downside.
[0] https://en.wikipedia.org/wiki/Amusing_Ourselves_to_Death