Really, you are so right. They ought to have college courses on the good old "primal" games!
Those "games" used to get everyone involved, weak and strong, and somehow the weaker kids enjoyed it too.......most of the time. Those "games" really were great character builders! There is something to be said for smacking each other around, and coming out all together and laughing with your buddies.
And I think the following is possibly the essense of the value of those "games".
The very fact that all the kids are hammering each other, and at the same time, a basic good nature in mostly everyone is exhibited and prevails, causing no kids to get really hurt, each kid comes out of those games with a greater TRUST of all the others and a better sense of their own value.
I hope I made sense there, because those games are a very GOOD and NEEDED thing in growing up, a very valuable thing! And these do-gooders are ruining generations of kids, IMO.