Am I the only one that looking at what the kids are doing in the pictures consider it totally normal?
In Spain we used to do way more dangerous things than those.
And it was risky, one of our friends died in the river jumping over a slippery stone and hitting his neck with a stone while falling backwards. I have to say he was pretty nuts and was in constant danger everywhere.
Another friend is in wheelchair after jumping badly from a big 20 meters high rock to the Mediterranean sea. We all jumped the rock. It was funny, but you need to know what you are doing.
But those are two cases over hundreds of people I knew well over my life.
We learned to do bunny hops and do jumps and go downhill. Skiing over rocks outside official circuit.
You leaned early on how to manage risks and how to say no when your friends want you into doing stupid things(or you are not skilled enough for the task). I really appreciate those memories(and continue doing risky things like BASE jumping).
I have to say that my friends doing risky things now that we are adults never had significant problems. They became experts managing risk and some of them even teach it.
So in my opinion total freedom has its drawbacks and is not a pie in the Sky, but it is worth it.