The beetus has a series of risk factors, and our boy has them all. He is completely sedintary, he drinks every day, he smokes, he eats mostly processed food high in sugar and trans fats. He has only recently started to put on the pounds, and that's another risk factor. I would bet he has full blown untreated type 2 at this stage, which left untreated has some pretty horrific long term outcomes.
I guess if he ends up with one or both feet amputated we'll get a peg leg or wheelchair saga. Of all the Clint Bad Dad tropes, not forcing him (somehow) to get a yearly blood test and getting him on a drug regimen is probably the worst. His alcoholism isn't tragic enough for a quick crash and burn, but untreated beetus is one horrific ride to an early grave, and it's not sudden. I feel sorry for the boy for what's likely to come.