I get this, and it makes sense. But the combination of network connectivity and expensive closed-box devices means I'm not sure how to implement it.
The computer I grew up with was isolated. If I broke it, I had a broken computer. I could take my time fixing it. Nowadays, a computer is connected... to the other computers in the house, and the entire internet beyond. If my kid breaks his computer, he might get in all kinds of trouble. I can't let him play around and fix it if it breaks, for the same reasons I don't let him play around with something plugged in to the mains electricity as a way of learning about electronics.
I'm also not going to let him wire up the x-box, because I know that a busted HDMI connector that broke because I was letting my kid plug the thing in is unlikely to be covered y the warranty.
For the computer thing, that's pretty much exactly why Raspberry Pi was created, so there was a cheap open (relatively) computer that kids could play around with, and even if they somehow manage to break it, it's only like $30.
As for the XBox, couldn't you just supervise while your kid hooked it up? Hand him/her the parts, tell him/her to go to it and you'll answer questions and keep an eye on things so he/she doesn't break anything but otherwise leave him/her to figure it out.
The computer I grew up with was isolated. If I broke it, I had a broken computer. I could take my time fixing it. Nowadays, a computer is connected... to the other computers in the house, and the entire internet beyond. If my kid breaks his computer, he might get in all kinds of trouble. I can't let him play around and fix it if it breaks, for the same reasons I don't let him play around with something plugged in to the mains electricity as a way of learning about electronics.
I'm also not going to let him wire up the x-box, because I know that a busted HDMI connector that broke because I was letting my kid plug the thing in is unlikely to be covered y the warranty.