American food is a mishmash of whatever. Texmex is bastardized Mexican, "Chinese" is bastardized Cantonese food for the most part, hamburgers and hotdogs are bastardized german food, pizza... it doesn't make it bad, but it does make it different than the inspiration. There's a lot of good food available, even some fast casual places are solid. It definitely doesn't have to be haughty or have a lengthy pedigree to be good. Some of my favorite meals have come from food trucks, and it could be just as simple as some guy in a halal cart on a street corner who made a really good batch of rice and whose sauces are extra tasty. Good food is good food.
"Ah, you miserable creatures! You who think that you are so great! You who judge humanity to be so small! You who wish to reform everything! Why don't you reform yourselves? That task would be sufficient enough."
-Frederick Bastiat
-Frederick Bastiat