I will be brief with this due to time that I have, But I can partly agree only. As an editor for print media you were dealing with people that exhibit long attention span. The place where the “wrong body” point is used is generally TV were the attention span is much lower; try around 25 seconds. If they can not get a good idea of what is being said in 25 seconds, you lose them. So, I would say give them something else that is around five seconds to read on air that is better. I can’t think of anything myself, but I haven’t done serious writing for a long time and as sort of out of practice on those skills.
Homo sapiens actually ARE primates. However, we are part of the Great Ape classification of primates, all of which consume meat to meet their nutritional requirements at least occasionally. In addition, eating meat, especially cooking meat is an element of what helped us evolve into larger-brained mammals, not just because of amino acids, which can be found in other foods, but because of the reduction of energy expense devoted to the gut and redirected to the brain, as cooked food is much easier to digest. So while there are a couple inaccuracies in your argument, I agree with your main point. Our bodies are engineered to process meat.