^ Video games and violence has been debunked many, many times.
People develop at different speeds. Dougs kids will be ready for training classes before the average Joe's because they'll already know how to safely and proficiently operate the tools. But your first might be ready at 9 and your...
Hype.
When you understand about wound ballistics you realise all the stuff that looks cool in slow mo (when it comes to pistol calibres) is just that, stuff that looks cool in slow mo. Nothing more.