Interesting.
Although I'm sceptical about that working for me specifically: I have a very weak sense of smell and therefore taste, so sweet, salty, umami, etc is probably much more of my tasting experience compared to most people. Without that I think I'd be left with not much at all.

As an example, spicy ('hot') in food to me is pure pain. I literally can't comprehend how there could be any kind of flavor to it that people not only enjoy, but so much that they actively seek it enough to build a tolerance to the capsaicin.