If you live in a medium to large city in the United States you have great food options, but most people ignore them and go for the easy stuff.
> I don't know who is supposed to be shocked by the assertion that American food is worse than European food.
The article was probably intended more to play to the “America bad, Europe good” meme that permeates social media, not to shock people into some revelation.
The reality is that America does have good food options if you go looking for it, but it also has large amounts of convenient and processed foods for people to choose from. Turning this into another culture war topic isn’t really helpful.
What I do like about their food is breakfast. It's simple, tasty and would set you up until 4 pm. Plus the tea and the cookies but I don't consider those "food".
So you need to research where to go. But English food at its best is as good as anywhere and pulls influence from a variety of cultures.
But I would rather shop in a general UK supermarket than a general American one any day. The food is not as processed and not full of crazy ingredients ( but is getting worse ), and you can often buy local.