Anything with artificial or natural flavor added has been engineered. It's not wonder some people don't like the taste of "real" vegetables. I have sons that would rather eat a hot pocket or tv dinner than something my wife made from scratch.
I see this perfectly in our cats. A couple decades ago they would eat people food and love any chicken or turkey we would give to them. Did I say 'love'? I mean the little carnivours went crazy and devoured it.
Well, over they years we've regularly fed them basic cat food, both dry and in cans. I've seen their taste preferences change to now they simply will turn and walk away from any natural meat at all. I am convinced the cat food makers have put somehting in the food so 'real' food will be totally unappealing and they will have customers for life.
As to people, I agree that 'constructed' food makes you want more of it. That is no coincidence. And why it's more difficult for the SAD eaters who are used to consuming lots of processed foods to change their diets.