[1] For varied definitions of "amazing", such as "conquer countries 10x your size", "invent 20 sports the entire world plays", etc.
I grew up in the UK but I've lived for 15 years all over the US, and it's always confused me that Americans are convinced that British food is bad. On a whole, British supermarkets have far better produce, in both quality and diversity. UK restaurants run the gamut from cutting edge fine dining and wonderful traditional food to home-grown variants of immigrant cuisine. It's a great place to eat.
My home town is legendary for Indian restaurants—to the extent that Birmingham-style Balti curries have made their way back to India. Before you claim that this is Indian food, not British, can you name an American dish that wasn't developed by immigrants?
Home cooking is far more popular in the UK than the US: anecdotally, most British people cook most meals at home, while few of my American friends know how to boil an egg and rely almost entirely on take-out. British celebrity chefs and cooking shows are famous worldwide. It's odd to claim that British food sucks while binge-watching our prime-time baking show!
I love America and a lot of things are better over here, but food—unfortunately for me—is not one of them.
I highly recommend you check out this book:
https://www.phaidon.com/store/cookbooks-food-and-drink/the-b...
And since most American food has also made its way to the UK, there's really not a great deal of difference.