I agree that supermarket fruits and vegetables often seem to lack in flavor but to my taste, Red Delicious is not worse than any other supermarket apple. All supermarket apples, even the sour ones, pretty much just taste like slightly different variants of sugar water to me - the sourness of the sour apples just rides on top of the sugar water taste without really displacing it. I do not know why Red Delicious specifically has been singled out as the target of multiple critical articles given that one could just as accurately write such articles about all sorts of produce. Do most people really think that other supermarket apples taste any better than Red Delicious?
because it doesn't even have the sugar water taste going for it. it been so over optimzed for appearance shape and shelf life that the texture has become unpleasant, the flavor is non existent, and for years it was "The Apple" you have generations that had one of those awful thing sent in their school lunch every day (and usually threw it away without a single bite), that have grown up had enough of this garbage apple and it is now emblematic of bad flavorless fruit and vegetable in stores.
They usually have them near Gala at both my local grocery store and Walmart in the Midwest. They are good, though often a little more bruised than other varieties.