There is no “food OR fuel” here. It is both.

When cattle eat corn, they are primarily consuming the protein, and wasting the carbohydrates. When they use that corn to make ethanol, the fermentation process uses the carbohydrates and leaves the protein in a more concentrated form that is better cattle feed. My brother makes use of this on his farm. Instead of chopping silage (entire plant, including grain), they sell the corn to the ethanol plant, bale up some of the stover (husks, cob, stock) grind this and mix with wet distillers grains making a cheaper, better feed.

To vilify the ethanol industry, it’s opponents over simplify it to make it sound evil.