What insights are those?
Also, they don't look impressively healthy.
I agree that it is dangerous/foolish to blindly believe in the Noble-Savage myth like Weston-Price did. At the same time, modern hunter-gatherers who still adhere to ancient (albeit Neolithic) customs do give us a partial insight into what life/lifestyle our Palaeolithic ancestors. There are so many ways in which we modern, civilised/settled humans differ from our Palaeolithic ancestors, and diet is merely one factor thereof. Those who think that just adopting a raw, palaeolithic diet is enough are deluded. We moderns are cursed with wholly unnatural organisations(instead of smallish tribes with a common genetic heritage, we now have meaningless, arbitrary artificial constructs such as nations, we have far poorer sleeping habits, we are all also far less intelligent and far less physically fit compared to our Palaeo ancestors etc. Short of a time-viewer/chronoscope that would allow us to watch our Palaeolithic ancestors in action, this sort of thing is as good as it gets, for now.
Here is a quote- "The tribe believe every living object has a spirit and worship nature, particularly the river. They think damaging or polluting the water source is a sin."
Animist religions, and even polytheistic religions, are also way healthier and more natural than the appalling monotheistic religions available nowadays.
Interesting re the no clothes for the upper body bit. An acquaintance once told me how appalling it was when she visited Indonesia in the 1960s, that all the local Indonesian women wore T-shirts on their top halves. They used not to do this, and just worse grass skirts with absolutely nothing covering their upper half, but because of staring Westerners, they duly adopted the wearing of T-shirts etc. despite the fact that that made them sweat profusely and stink as a result.
In my own case, were it not for absurd modern customs, I would much rather just go naked here in Central Europe for 8 months of the year, and just wear shorts and T-shirt in winter, other than when it is way below 0 degrees Celsius.