They aren't trying to reverse engineer anything, they are trying to make food they like that is not also attached to activities they find unethical.
There's no contradiction or dissonance, it's "I find raising and slaughtering animals for food unethical" on the one side and "I like certain flavors" on the other.
There's no contradiction or dissonance, it's "I find raising and slaughtering animals for food unethical" on the one side and "I like certain flavors" on the other.