Too funny, I just saw this. Wish I did earlier, because I just finished the book yesterday. Afterward I did some online reading to get other's opinions. My mixed feelings were confirmed by other reviewers on my favorite book site: Goodreads. Certainly the memoir stuff was interesting but the social commentary was thin on substance IMHO. One my favorite reviews described it as 80% earnest memoir and 20% humblebrag.
He does capture that poor working class mentality. I spent 18 years in a rural central PA school district that exhibits many of the same qualities as Appalachia. So if you want to learn more about this demographic, and how one young man made his way out of the poverty cycle, its a decent read.