I'm just going back and reading, or re-reading this thread.
You brought up several varied points in your post, but some really make me think....
I would so much rather see a boy leaning against a tree reading, than playing with technology..... but what I see more of is a boy or boys huddled up in a tent with a video game, with other cubs that didn't bring their games or tablet computers huddled around watching and wanting a turn. Our CM's sons are the ones with all of the latest gadgets, and it's usually around their tent where you find this huddle. On a campout, I view this tech as a sort of cancer. On a camp out last year, I had my son leave his tech at home. Unfortunately, other boys had theirs. I asked my son to go climb a tree or something, but it's hard when he wants to be right in the huddle!
I wish I could drive a removal of that cancer from our pack, but as mentioned, our CM, as well as other leaders, are the tech crowd and I think view the tech as a way of getting the boys out of their hair so they can burry themselves in their own smartphones.
Your point about TV on the home front is interesting. I was raised without much limit on TV. I have always contented that a kid can learn from TV, even stupid fiction. I feel that I was able to put myself in the situations of the story line and learn from it...... Situations that I may not otherwise find myself in..... shows like Andy Griffith, Brady Bunch, Munsters, Beaver, Lucy, etc.... usually had some sort of moral or social lesson
I think even the newer ones that my kids watch now that aren't nearly as "wholesome", can be educational to a degree.
Still, I do agree with your point that generally speaking kids with stricter limits tend to be more polite and socially well adjusted.
My wife and I limit our kids with TV & tech, but MAYBE not nearly enough.... I'll have to give this some thought for sure.
Our troop encourages facebook and socail media except when camping and during meetings. Otherwise facebook is mandatory for troop communication. Boys need to be fluent in technology to integrate into college and the workforce.
Its a tool ust like a pocket knife a rifle or a 2M radio. and the kids ned to have the skills to use that tool effectively.