Hi Sara:
Great post.
I've heard of this too. By the way, the pygmies of the Congo, the San/xosha people of the Kalahari, and the recently discovered so called "hobbit" people of the Island of Flores, are considered by some to be the three original branches of the modern human family, homo sapiens. I don't know if genetic testing has been published or not to verify that.
Two flourished, and the third (which is considered to be closer to nature than the other two, and more mystically inclined) disappeared. The Kalahari people are vitally threatened as we write this as they have been cut-off from nomadic life and forced to live in fixed encampments by their governments. The pygmies will be next. I just guess one has to view it all as Joseph Schumpeter did as "creative destruction" one of the hallmarks of capitalism and a primary engine of western civilization.
As I've suggested elsewhere musical and acoustic structure seems to be popping up around the universe in many places which affects our realities. But especially so in biological work.
We in the West pretty much lost our ability to communicate with the universal harmonies such as the pygmies have for millenia, and benefit from the results. But the story certainly doesn't surprise me.
flow....