I have seen a 3 year old do things with electronics that probably most adults can't.
Shit I was 3 when I could use the vcr better than most of my family. I was the only one who could set that recording timer.
Yup, once for a college project I had a little Flash thing for a fake t-shirt company and it allowed you to design your own t-shirt, it was really simple stuff technically, but adults being adults seemed like they were scared to use it or go into anything and didn't play with it much while looking from afar when possible.
Some kids that were there though loved it, of course they made some rather rude looking things, but it was like they knew how everything worked from the get go, it is just part of being a kid or a young person in general and being able to explore, play, and figure out without having that mindset you build up over the years.
And at the end of the day in reference to the topic, this is an OS that is meant for the world and mostly at adults who make up most of the install base, if they can't figure out how to use it regardless of how simple it is then you have made a mistake.
Some will learn, some will take a step back and not bother until it can be what they know again.