The big problem with tomatoes is that the ones that go to supermarkets are harvested green and ripened artificially. They don't develop the same flavors as a natural sun-ripened tomato. But, a sun-ripened tomato at the peak of ripeness is both too fragile and too short lived to be shipped and sold in supermarkets. I think the same is true for a lot of other fruits.
Keep your eyes out for "Heirloom tomatoes" or my favorite, zebra-stripe tomatoes. They're a lot smaller, vary in color a lot. Pack a punch, I like to just snack on them whole.
". The loss of these beneficial nutrients did not begin 50 or 100 years ago, as many assume. Unwittingly, we have been stripping phytonutrients from our diet since we stopped foraging for wild plants some 10,000 years ago and became farmers."
Realistically, what the farmer wants is irrelevant. A farmer who grows what a farmer wants is a farmer that is no longer in business. You need to have customers to stay in business, and so the customer always dictates what is grown. Customers don't buy product they don't want – why would they?
If the customer desires a slower-growing plant, the customer will get a slower-growing plant (assuming the tech companies are able to make the science work, but that's outside of the hands of farmers). Although knowing the average consumer, there is a good chance they would never accept a slower-growing plant as it may cause autism or some other story that they start to spread around.