Earlier quoted context omitted.
A sugar tax will accomplish a lot and is much easier.
Yeah I was going to say this. If you want smokers and the obese to partially fund their own healthcare, you can very easily slap taxes on cigarettes and soft drinks, earmark that money to go to insurance, and call it a day.
80% of people with Type II diabetes who are also overweight or obese would be asymptomatic if they lost weight. Why spend public money if there exists a free treatment? Save the public resources for right-weight type IIs and type Is.