Nature is not static. A small example would be Darwin's Finches shifting prevalence of break size from year to year. Or multi-year predator-prey boom and bust cycles. Or how bacteria learned to eat nylon in less than a century.
Cultures are not static. For example the Inca and Aztec empires apparently only date back to the 12th and 13th centuries.
And driving bison of cliffs were a sustainable hunting practice - it was habitat loss due to farming and commercial hunting that led to their population decline.
"Empire of the Summer Moon" https://www.amazon.com/Empire-Summer-Moon-Comanches-Powerful...
You're responding to the "noble savages" strawman -- the OP article never claimed such.
(Moreover, you're responding with a relatively isolated incident of Native Americans driving buffalos off cliffs, which I agree happened and Is Not Good. But it's odd to mention in the larger historical context that the American Buffalo became endangered due to industrial scale slaughter caused by European settlers--A Big Deal, relatively speaking.)
On balance, yes, Native people are often the best guardians of the forest for a mix of reasons. One is the animistic belief systems, which falls under the "Noble Savage" bucket. But the other is they more often than not don't industrial-scale commoditize their living spaces, part and parcelling out the goods as raw material inputs. Which other groups, like Asians and Whites, often have.