it simply highlights his failure as a father. hunter comes from privilege and was afforded many things and paths in life that most of us can only dream about. yet he still turned out to be a degenerate.
some of that blame and responsibility has to lay on the parents. as it would with any situation involving a kid who is clearly suffering from some darkness in life. there is probably a long story as to why he turned out to be such a piece of filth.
so i guess this time the apple fell far far away from the tree.