And it has been a while that I tried to find out more about them, but I mainly found it hard to get neutral sources at all. They are very closed up and you cannot just visit them. Or in some ways you can, but you won't get to see the inside structures. How they actually make decisions. At least that's what the people I read reported.
(But there is a study I just stumbled on, I will read later, maybe there is sonething more concrete inside:
https://www.sciencedirect.com/science/article/pii/S073805931...)
All in all it sounds more like tribalism. A indigenous culture that is trying to survive with some autonomy in a world of nation states.