The memes of the climate

Of course, I see your point, and I see the disconnect we have here! To simplify my stance, I wouldn't want to rule out animal by-products as a food category, as those can be valuable calories to people in places where farming might not be feasible for all their nutrition needs. That said, and to your point, traditional animal by-product might not be included. As you mentioned, industrial egg production, milk production, or honey production (in places that don't naturally support honeybees) are not likely candidates for sustainable food sources.