No - O's are supposed to do best on lots of meat, fruits and veggies, with few to no grains, legumes, - basically starchy carbs. The typical hunter-gatherer type nutrition profile - like animalbolics or that type of thing.
A's were the first farmers, thus grains, legumes, potatoes etc are just fine - agrarian type nutrition - he recommmends a switch to vegetarianism for A's, with little dairy, few eggs, lots of soy products. Which doesn't really seem that farmer-like to me ... You do keto, though, don't you?