At the younger levels of soccer I noticed the kids were often just waiting for their turn to get the ball, or for the ball to come their way, and it occurred to me that we’re basically trying to get them to unlearn some stuff we’d spent the first five years or so teaching them.

So true. Most parent spend lots of time to have their baby walk and talk just to tell them later to sit down and be quiet.
Panel 2 is still tamer than the usual “Smash him! Break his legs!” That I hear at football stadia!
Yepp, I what you cited is among the lighter verbal offenses 😀
that’s because you go from playful activity to competitive sport where winning is more important than your life
To me, the difference is one they are playing together and the other they aren’t. I generally don’t teach my kids to “wait their turn” when it comes to play. I teach them to play together wherever possible.