The basic difference separating the people who feed us from the chattering classes is that farmers and cooks are bound by laws of nature. Milk comes from cows, beef from steers, eggs from hens, etc. These products have to meet certain standards and pass repeated inspections.
But pundits can say whatever they like. Pigs might fly. So few of us have agricultural experience these days, whatever they say can be believed by millions and repeated for years before anyone who has even, say, set foot on a farm might move to correct it.