Earlier quoted context omitted.
I come from a family that was borderline of the definition of "extreme poverty" within the U.S. This is a really poor argument. Aldi spaghetti sauces have ~10g sugars compared to a bottle of coke having ~65g sugars. Look into how many people are using Aldi's spaghetti sauces vs how many people are guzzling coke. Is over sugarized shit literally everywhere in the U.S.? Yes. Can you genuinely not find anything without?…
I think the problem is the amount of processed carbs rather than sugar on its own. Sugar is addictive but not in the concentration you'd get in a pasta sauce (in a can I assume). IIRC most western countries are vastly over-caloried, and have a roughly inverse relationship between BMI and income too.
You can literally throw sugar canes into a juicing machine and it has less sugar content than a can of coca cola