The equation of American bread with Wonder Bread is really tired and offensive. Maybe you should spin some tale about how American flour is so, so, different that making bread with flour, salt, yeast and water is so different than in Europe and it comes out completely inedible to those of refined palate.
Eh, I don't think using "American bread" as an expression for bad bread is all that horrible, just like "being on Italian time" (or Brazilian or whatever) or for people who are habitually late or "going Dutch" for splitting a bill is all that bad - even when I do know Italians and Brazilians who are always on time, and Dutch people who will pay for their table. Then again, it's 2020, so I guess I should change colloquialisms like this.
My complaint about bread here in the states (I am American) is not that it's soggy so much as Americans have very high tolerance for stale bread, which means stores will often leave stale bread to fill the shelves completely, and I guess less "artisanal" brands will make their bread much less appealing when fresh because the market tolerates bland, hard textured, flavorless goods.
This varies a lot with the store and in what town you buy the bread. I didn't have this complaint as much in the Northeast as I did out west. But out west, you can find the good stuff if you are more selective and pay more.
The equation of American bread with Wonder Bread is really tired and offensive. Maybe you should spin some tale about how American flour is so, so, different that making bread with flour, salt, yeast and water is so different than in Europe and it comes out completely inedible to those of refined palate.