Oh I enjoyed the discussion. And I continue to argue that the importance of a name is not new, naming animals meant for food is. But I cannot tell you why, only make guesses.
My granny named all her animals, cows, pigs, chickens, etc. if they warranted a name....stood out in the crowd or needed a name so one could refer to them separately, so I'm not sure about animals for food getting names as being a new concept....all of her animals were food eventually, be it in short order or after kept for breeding for years beforehand.
Forty years ago we started homesteading off grid and ALL the animals except dogs and cats were destined for food consumption and many of them had names, especially those we had few of, like pigs, ducks, turkeys, whereas the larger flocks of chickens rarely got names unless some of the birds stood out in the crowd~roosters, a different colored hen, an exceptional layer or mother, etc.
I don't think it's a new concept to name food animals, just a new concept that a name should keep an animal from becoming food.