Earlier quoted context omitted.
I'd still argue that's quite local. In most Spanish supermarkets, stuff tended to be local or from nearby EU countries. Although now things are degrading. My favorite UK supermarket sells organic pine kernels from China, at a ridiculously high price. That's not local, nor pine kernels are typical produce from China. It's just seeking high margins.
Soil composition, fertilizers, vegetable strains, and weather conditions all impact taste. Tomatoes from my garden made from heirloom seeds taste significantly better than best boy, beefsteak, or even tomatoes on the vine. I've had tomatoes from Italy, in Romania if all places, and can concur that even the produce exported tastes worlds better than what you can buy in the average US supermarket. I'd wager that the ty…
Of course, living in the Bay Area I'm spoiled by the selection. It really is better than a lot of other areas. In contrast, Portland, in particular, stood out as having consistently mediocre produce available (and New York was surprisingly good even in the middle of winter).