I'm sorry, but there are plenty of tribes on nat geo that eat unprocessed food and don't have perfect teeth or jaws.
hehe yeah, i have noticed this too
you guys seem to be under-estimating the power of braces and other orthodontic appliances (helix, twin block, herbst, pendulum etc..) especially in kids since the facial bones are still soft and "weak", wrong/improper orthodontic treatment (during one's youth) can indeed worsen a dental skeletal malocclusion