Wrong on all counts. The "noble savage" was and is a myth.
Head smashed in buffalo jump is a prime example of waste. They would stampede an entire heard over a cliff, take what they could process and carry and leave the rest to picked over by scavengers or rot.
They warred on each other regularly and I can give you more examples of waste from the above to clear cutting and draining swamps.
And Cahokia. Until 1830 (when it was surpassed by Philadelphia) Cahokia, near the site of present-day St. Louis, was the largest city in the Americas. And it was all native.
But this is one example among many of Indian "failures," if you insist on being judgmental about it. Cahokia was not wiped out by the whites, it was wiped out by soil depletion. Cahokia was supported by gigantic cornfields, and anybody who has even a passing knowledge of farming knows that corn depletes the soil very quickly. Cahokia practiced crop rotation rather than the milpa, for the same reasons the whites do. But they got it wrong. Even with crop rotation, the corn depleted the soil until Cahokia could no longer feed itself. So the city emptied out and fell to ruin.
I'm sure racists will trumpet this as conclusive evidence of Indian inferiority, completely ignoring all the European cities that failed for a variety of reasons. But my point here is to agree that Indians are no better, and no worse, than anybody else. And any stereotype is necessarily wrong.
20,000 years. Two continents. 3000 nations. One-fifth of the world's population. We tried
everything. Political systems ranging from pure democracy to the most rigid, god-king fascism imaginable, and everything in between. Religions from absolute monotheism to piddling reference to thousands of gods just as a casual way of referring to everyday objects (the pot had a "spirit". Each pot had a "spirit"). Redeemer stories. Original sin. No original sin. Religions that stated that "we" (whichever tribe was pursuing it) were the only pure ones, and everyone else were the spawn of demons. Religions that stated that all people were equally God's children. Economic systems from pure communism to trade-based capitalism so extensive that pipeclay, which is only found in upper Midwest of the U.S., was traded as far as Tierra del Fuego and corn, developed in Central America, was planted everywhere on the two continents (and offshore islands). Metalworking in gold, silver, and copper. We were clearly on the road to bronze when the Europeans showed up, and given that the highest-quality iron ores in the world are in North America, that no doubt would have followed. Maybe even steel, which the Europeans didn't invent either (they got the idea from the Arabs), so you never know.
What we didn't have was beasts of burden. Of the 14 beast-of-burden species, only one is indigenous to the Americas, the llama. And the llama is of limited utility, good for carrying some cargo, but not large enough to ride.
Other stuff was hit-or-miss, catch-as-catch-can invention and discovery. We vastly outpaced the Europeans in plant biology. They were ahead of us in metallurgy and animal breeding. And that last was our ultimate downfall. The Europeans (and the middle Easterners and Asians, and to a lesser extent the Africans) lived with their animals. So they got the crossover diseases (for those of you who didn't know, just about every epidemic disease came from animals and adapted over time until they could attack humans), and spent a couple thousand years developing defenses. We got all those diseases at once, and had no opportunity to develop defenses. The epidemics that wiped out 75-80% of us were immediately followed by wars of extermination.
Of course we never had a chance. C'est la vie. The Etruscans had a nice little gig going, until the Romans showed up. The Central Asians had some very nice cultures going until the Mongols roared through. We move on as best we can.