What are some themes of "Hillbilly Elegy: A Memoir of a Family and Culture in Crisis" from Chapters 1-8?

In the first half of the book, J.D. Vance relates what life was like growing up in a white, poverty-stricken working class environment. Two main themes from Chapters 1-8 are how unrelenting poverty contributes to domestic instability and how a lack of personal will/agency leads to systemic dysfunction within a community.
Vance spends the first half of the book describing how he grew up in the Midwest. His Scots-Irish family moved from Jackson, Kentucky to Middletown, Ohio, before his teens. Vance relates how he learned to navigate various father figures with cynical ease during his childhood years.
He describes without apology the white, Appalachian working-class lifestyle and how the "hillbillies" cherished their own brand of justice (what is termed the "honor culture"). For example, Vance relates how his Uncle Pet almost killed a man for what he considered an insult to his mother. At the time, no one criticized Uncle Pet's literal interpretation of Big Red's words--honor was a sacred thing in the hillbilly community. Vance remembers another incident of hillbilly justice when a suspected rapist was found "facedown in a local lake with sixteen bullet wounds in his back."
Despite his pride in his hillbilly heritage, Vance is unflinchingly honest about the problems his community faces: "...the hardest truths about hill people are the ones they must tell about themselves." The hillbilly insistence on extrajudicial justice may well be a matter of honor; however, this tendency to resolve problems with violence negates thoughtful analysis when the situation calls for it. Vance maintains that avoidance of the real issues promotes psychological resilience, but it also masks dysfunction. Papaw and Mamaw fought with their fists, but violence solved very little in their relationship.
He notes that many of the hillbilly communities in Appalachia are riddled by a prescription drug addiction epidemic, failing schools, moral degeneracy, and chronic dependency on government assistance. So, one of the main themes in the first half of the book is the lack of personal will to fix the systemic dysfunction that keeps everyone in poverty. Vance openly admits that this "learned helplessness" frustrates him.
He relates how a friend quits his job because of his hatred of waking up early. Later, this same friend takes to Facebook to detail his woes and to blame the loss of his job on the Obama economy. Vance also notes a similar situation when nineteen-year-old Bob gets fired from his job for being chronically late. After he is fired, Bob approaches the manager and yells, "How could you do this to me? Don't you know I've got a pregnant girlfriend?" Vance concludes that this inability to take full responsibility for one's actions is largely responsible for the continued dysfunction in the hillbilly community.
This theme of "learned helplessness" coincides with the theme of domestic instability under the burden of unrelenting poverty. Vance notes that violence and alcohol addiction dogged his childhood years. Mamaw and Papaw often engaged in fisticuffs, and Papaw cheated on Mamaw. Later, Vance's own mother became a drug addict, and this led to Vance being placed under Mamaw's custody.
The cycle of drug/alcohol abuse, violence, and poverty became a crushing burden, and Vance soon found himself at a crossroads. Would he continue the cycle or would he break from it? With help from his no-nonsense Mamaw, Vince managed to break free. Vance later served four years as a Marine and graduated from Yale Law School. The main reason he wrote the book was to show that the "story of economic insecurity is, at best, incomplete." I would argue that the main theme of the book is encapsulated in Vance's own words.

I want people to know what it feels like to nearly give up on yourself and why you might do it. I want people to understand what happens in the lives of the poor and the psychological impact that spiritual and material poverty have on their children.
https://www.newyorker.com/culture/cultural-comment/the-lives-of-poor-white-people