I read the article on Chinese medicine and feel it missed the mark. The Chinese (and Asians as a whole) use more than a few herbs to treat various medical conditions. Bear claws where the bear is slaughtered for its claws and feet. Rhino horn, shark fin, various testes, etc.
While a few herbs sounds harmless enough, folklore medicine should be condemned for what it does to animal populations the world over.
I would guess that the reason there weren’t any jars of powdered yak gall bladder is that those items cannot be imported due to international and national laws against their importation.