Unfortunately this isn't the case. The Pleistocene North American mass extinction, which wiped out the saber-toothed tiger and North American mastodon, was a r

Unfortunately this isn't the case. The Pleistocene North American mass extinction, which wiped out the saber-toothed tiger and North American mastodon, was a result of hunting pressure about 10,000 years ago. The positive stereotypes you are selling aren't real. They're largely the product of Hollywood (e.g. the "Crying Indian" ads), just like the negative stereotypes of the same peoples. Native Americans are people; given the opportunity they wreck nature, and once given guns and horses they stepped up their hunting of buffalo, for example, to levels that would have been unsustainable even if white people hadn't been killing the Buffalo off at far greater rates at the same time.