Okay, one good point. It advocates eating whole foods. Great. But it's reasons for not eating meat comes from some sort or Kindergarten statement you've probably heard.
"Eating meat is inefficient."
The story goes as follows, it takes some amount of energy to produce a plant calorie and something like ten times that amount of energy to produce an animal calorie. So what?
Find ANY vegan commune and you'll notice a literal ton of animal calories and insect calories that are available and that are not utilized. If efficiency was truly the issue, killing and eating local herbivores and insects is a no-brainer. The fact is, animals and insects frequent the same geomes that produce plant matter.
I really don't know how to make this any clearer. In my home state of Mississippi, there is a ton of woodlands and ponds that are not being used to produce vegetables or fruit, but in which sustainable hunting is a very real (and common) reality.
This is clear to me, but efficiency is not an issue here. This land is perfectly balanced and hunted upon and provides animal protein to the local people. This is an efficient and preferred way of obtaining protein, fats, and calories.