Geeze - I look in a grocery store and see way more good food that that kind of crap. Is it just that the average American doesn't eat/cook what they find at the grocery?
Studies from American Journal of Clinical Nutrition show 61% of American grocery store purchases are highly processed foods and 77% are highly or moderately processed foods. FDA studies show 60% of Foods in grocery stores have sugar added.
Most people just don’t understand/know what is and isn’t crap as you call it. But I think understanding what foods lead to metabolic disorders and chronic diseases, people would look at American grocers as peddlers of poison (of course they have a small percentage of healthy foods too).
Guess: you probably shop more around the outside of the store where you'll typically find the unprepared foods and probably don't shop for groceries at Walmart, maybe not even Safeway. I know it's true for me but not most Americans.