Because when they were raised as children, they did no wrong, and everyone got participation trophies (along with groupthink).
They weren’t allowed to see the real world.
It might be time to bring back the old ways. Rites of passage for girls and boys. That cut off point where they are no longer children, but adults. Elders were held in higher esteem too. It was an honor to hunt with and as a man or to sit at the women’s table.