His fear of men turns into aggression against women. Boys become men to escape being victims by definition. But male aggression is rapacious. It spills over, not accidentally, but purposefully. There is war.
Older men create wars.
Older men kill boys by generating and financing wars. Boys fight wars. Boys die in wars. Older men hate boys because boys still have the smell of women on them. War purifies, washes off the female stink.