I agree with KD that "pure" instinctive nutrition must be way different from the purported "instinctive nutrition" of the "classical theory" put up by GCB which most instincto have to follow due their sedentary life habits.
Our denatured food environment ( even when raw) sets an internal limit to the validity of the theory without invalidating the theory itself. It just shows that changes in our food habits must go hand in hand with changes in agricultural practice.
If appropriate food quality is essential , a proper mental setting is as essential to the correct functionning of one's instinct. This is where the "money factor" and "stressful life" must be factored in.
Having spent a couple of months in Montramé as a "working guest" who did not have to pay for his meals, I could see how the lack of concern for the actual price of food helped produce a detached attitude REQUIRED by our food instinct. The situation of instincto at home is different in so much as one wants to eat all the food before it gets wasted. So you end up caring for your "investment" as much as you care about your smell and taste reactions. Unless you do not care for money (apart from religious minded people, few can offer such disregard ) you just can't help eating that much fresh food you have purchased.
The stress factor and the quality in life in general play a great part in the overall volume of food intake, as they determine our level of attention to internal signals. The fact that internal signals of hunger can be made imperceptible under dramatic psychological circumstances ( lovers living only by fresh water....) is a proof that no only our physiological status but also our psychological mindset can render taste /smell signals more or less perceptible. If we would live in a congenial atmosphere, replete with beautiful landscape, fine music and architecture, caring humans, and squirrels eating the remains of our hazelnuts at our feet, chances are that we would not be caring as much about getting our daily dose of wild mangos.
I'm probably stating the obvious so I'm stopping here. Don't want to "teach grandmother how to suck eggs"