While you are correct, you also have to consider the fact that cows are fed alfalfa, which is a crop that requires no fertilizer or pesticides and actually prod

While you are correct, you also have to consider the fact that cows are fed alfalfa, which is a crop that requires no fertilizer or pesticides and actually produces excess nitrogen fertilizer, which otherwise must be produced from natural gas. It also takes very little physical labor to harvest and store grasses and alfalfa compared to human food sources. The only downside to alfalfa and feeding cows with it is the water usage, but for large parts of the country that aren't California and get decent rainfall, growing alfalfa takes no irrigation. You could maybe also consider the land area needed for it, but US cropland utilization has been dropping for decade after decade and isn't really a concern.