Protein poisoning (also referred to colloquially as rabbit starvation, mal de caribou, or fat starvation) is an acute form of malnutrition caused by a diet deficient in fat and carbohydrates, where almost all bioavailable calories come from the protein in lean meat
The text says deficient in fat and carbohydrates. I’m pretty sure they mean it only happens when you don’t have enough of either, not that carbs are an essential nutrient.
FYI: For those that have never heard of the term:
https://en.wikipedia.org/wiki/Protein_poisoning
Small tangent - I know this is going to probably be an internet fight, but there is no such thing as an essential carbohydrate for human health.
Bioavailable nutrition is in the fat in the meat, and in the organ meat such as liver.
The Eskimos never died from a lack of carbohydrates.
The text says deficient in fat and carbohydrates. I’m pretty sure they mean it only happens when you don’t have enough of either, not that carbs are an essential nutrient.