Subsidies account for a very small % of either production or consumption of food.

Not sure why you are making an argument about food subsidizes to me, I have not argued in favor of them.

> More than half of all calories produced in the US are not even for human consumption.

Most of those go threw animals and are then consumed by humans. There is a lost factor there but saying its not for human consumption misses the point I would say. For Chicken, Pork and fish the lost factor is pretty small.