This is good context, thank you. I do find the ideas interesting, but ultimately frustrating because of no grounding in anything that I feel like I can trust -

This is good context, thank you. I do find the ideas interesting, but ultimately frustrating because of no grounding in anything that I feel like I can trust - e.g. is it actually true that "non civilised" groups have fewer back problems? But in a context where this author is known and trusted, or that is explicitly open to hearing observations based on experience without requiring any kind of citations or scientific studies, then I can see the value - I wish that was communicable here somehow, rather than looking like a regular peer-reviewed journal article.