If you wish to go full fairy tale, you must always remember to include the they-had-no-word-for-war meme.
None of this is to say that they were without technology, because science and technology are definitively human traits. Boat tech was pretty decent for the Chumash, and they traded inland to the desert tribes.
But there's an attitude that civilization must be superior here among lots of commenters here, with an obvious ignorance of what uncivilized life was actually like. We have traded away free time, clean environments, and live with family; for medicine, safety, and iPhones. We have also traded infant mortality, exile, and ignorance; for anomie, prisons, pollution, and tyrants.
https://en.wikipedia.org/wiki/Slavery_among_the_indigenous_p...
You're right that primitive societies did not have prisons - they could not afford them. They either killed the miscreant or banished him.
Heck, how many can make a fire without matches? Who'd give up boots? How about that parka? and that lightweight tent? canteen? cotton underwear? pots and pans? jeans? steel knife? trail mix? rain gear? toilet paper? the backpack frame and straps?