Every american (u.s.) cannot eat healthily easily, Spendi. There are still inner cities with rather miserable choices in grocery stores last I saw or heard. Suburban america, which is vast, often times offers little choice in the usual suspects' stores (some of which are improving ever so slightly). The general product in these is oversugared (by whatever ingredient) and oversalted, and overfatted. People watching any of those contents have to search fine print and success is problematic. The general product is nearly by definition pretty boring, passed through focus groups and corporate headquarters as it is. Variation is not offered much in most of the 'heartland', and isn't in many areas on the coasts. You get to choose between sugar and sugar, and so on. Salt is the new nicotine...
Much as I might sound rad, I will buy a packaged product if I like the ingredients.
I avoid the entire bakery of my closest store, except maybe for the quite small shelving of Oroweat. Every single other offering is dreck, and I'm not Oroweat's biggest fan - it's just the best that is there. I now make my own bread most of the time, which is a luxury re time and knowledge and access and I consider myself lucky for that. Other stores in my medium city have better bread, but they are miles away.
I read the original Hidden Persuaders book by Vance Packard. My dad was in advertising, started the tv department, if I understand correctly, for Foote Cone & Belding back in the day, and I considered off and on whether to go into that myself. I should have, dammit. I wanted to save the world some other way, especially after that book. I haven't looked at it in decades but I assume it was obnoxiously written and not entirely offbase. (Please don't take that as a review. I might have to look at it from an adult now point of view.)
You, Spendi, have obviously not taken a nice automobile drive across the U.S.