I agree that if it does what it claims then it would be useful. My point is that it seems the same as any PoW coin with a long history. It is only using the tribe coin story to boost price without any evidence of adoption by tribes.
It's really hard to "kill" a coin, but there are dead coins worth way more than Maza is, so saying that the story is used to boost price is a little ironic. Adoption may not be widespread but it takes time and there is real involvement.
Maza has a lot going for it, but the focus needs to shift from "mazacoin as currency for many tribes" to "each tribe has its own currency and mazacoin helps those economies develop".
The best model is probably a currency for each tribe, distributed initially only to fluent speakers from those tribes, with a secondary, much smaller distribution, to tribal members who don't speak the language.
There is a lot of politics and profiteering everywhere, including amongst tribes, so nobody should jump on any bandwagon without examining things first.