It just occurred to me as this thread popped up.

Of course the older generations are going to be stronger. All the weak fellas died! Survival of the fittest hasn't worked it's magic yet
But then maybe it won't because I feel like most parents would want to make the world a "safer" place for their children. And companies don't want to get sued for burns or puncture wounds because kids were idiots when using their products.
I hear old chemistry sets had blowtorches, cyanide, hot plates, glass blowing equipment, sometimes uranium, and probably some other shyt a five year old with the right mind could use to overthrow the government, put all the Russians in concentration camps, and completely destroy China. Badass.