Again Pharaohs were the wealthy who could eat whatever they wanted and were not required to do manual labor. Dietary illnesses of the wealthy are not uncommon throughout history.

I have never claimed people should eat grains to excess. I do however believe manual laborers benefit from carbohydrates in their diet. Even if they eat them at dinner, go to bed, store it as body fat, and then burn it the next day while working. Dietary fats can’t really help you replace body fat that you’ve lost through work. Because the body can’t turn fat into body fat. Only carbs or deconstructed protein can do that.