I didn't say they can't eat it - obviously they can. The post I replied to specifically called out that they were sticking with meat because humans hadn't evolved to eat plant-based or lab-grown meat, and then implied their nutrition would suffer if they gave up meat. If that's correct, it must also then affect livestock's nutrition, since they didn't evolve to eat a soy/wheat or, as you correctly call out, corn diet. So I asked if they avoid meat fed on this "not evolved to eat" diet as well.