I can't speak for every UBI supporter, but singling out food, and talking about “the food
they want me to have”, suggests an authoritarian top-down structure that nobody wants. The whole point of UBI is to enable autonomy. People should be free to explore and understand what their own needs are and not have it be dictated.
I'll admit that I was unclear because I used the word “starve” in my message. Obviously this choice of word was borne out of the principle that food is among the most vital basic needs, and that depriving people of it is one prominent way in which our current society is cruel. Nevertheless, UBI is not about just food, but more generally about basic needs.