I think it is possible that the majority of Americans do not know what they are missing. It is difficult to really understand how much better simple things like fruits, vegetables, and bread can taste without experiencing it. It's like The Matrix, you just have to see it for yourself. Well, taste it for yourself. I find that in America even local farm produce at the "farmer's market" often tastes flat and uninspiring. For whatever reason, heirloom tomatoes tend to be good though - they constitute an exception.

To be fair, I was not born in America. So it is possible that it's not that American food is actually subpar, it's just that I became used to particular nuances of how certain foods taste back when I was a child and I do not get that from most American food, and to Americans their produce tastes extremely delicious. I'm pretty skeptical of this idea though. My hunch is that I'm not experiencing some sort of chemical nostalgia, and that American produce actually isn't very good.

RFK Jr. successfully made some of this kind of stuff a minor campaign issue in the most recent US presidential election, so whatever one thinks about RFK Jr., at least it seems that there is some demand for food production reforms in the US electorate.