The libs long for a Utopia. They believe American natives lived in Utopian balance with nature until the evil white men came! Think Adam and Eve...they long for the very garden while sneering that the Bible is a fairy tale!
Sure they did - if you ignore twenty-thousand years of inter-tribal warfare, no medical care to speak of, no written language, they didn't even have the wheel.
Although the Anasazi were pretty advanced as far as timekeeping and calendar science.