Sounds weird for me, that people are so used to wrong fed cows, that they dont know anymore how to cook with flesh of a normal cow. There are more disadvantages to it. First thing is, that a cornfeeded cow eats food, that is suited for humans. If everyone has enough to eat, no problem: So we can feed the rest to cows to get some flesh. But feeding cows with food that is suited for humans, while humans are starving is wrong in my opinion. And its a waste of good agricultural area.
Another big misadvantage, that feeding corn to cows produces a high risk for humans as well. So the digestive parts of a cow are not prepared for corn. They can digest it, but the bacterias that are normal in a cows stomaches, cant do as they are used to. So cornfed cows produce much more colibacterias as a normal cow does. So when slaughtering the cow, there is a much higher risk, that flesh can be contaminated with colibacterias, which can be pretty dangerous to people, special to toddlers, old and ill ones. The bigger a slaughter house is, the higher is the risk, that a wrong slaughtered cow can ruin your completes day production, when the flesh of that cow goes through the whole slaughterhouse.
As far as I learned, US slaughterhouses are so big, that it is no longer possible to prevent that wrong slaughtered cows regularly contaminate the whole slaughterhouse, so the flesh gets treated with ammoniac. As long as it gets well spiced afterwards, you cant taste it. From my opinion, if the flesh is spiced that much, that I dont taste ammoniac anymore, I can eat Tofu or a pressed cardboard as well. ^^ No need to eat flesh, if I dont get to taste it anyway.