Maybe I'm missing context that would be clearer if I read the book, but since it was published as a piece that ought to stand on its own, I am confused at the o

Maybe I'm missing context that would be clearer if I read the book, but since it was published as a piece that ought to stand on its own, I am confused at the observations - devoid of explanation - that shower radio ads featured young, fit, white people. I am completely open to the possibility that there's a point to be made there, but none is forthcoming. What gives?