I think the other user replied what I would have said as well, we have a finite amount of time and we are seeing things from a computer-centric perspective.

I do agree that computer literacy is incredibly important and people should have the means to know how to properly operate the things they use on a daily basis but we could make the exact same argument over a myriad of things, take for example interpersonal skills or even emotions, we barely go over them in most educational systems and something as simple as communication is one of the biggest bottlenecks you can find while working, I've personally seen big projects go down in a big ball of fire all because of people miscommunicating or because someone can't control their emotions.

As a TL;DR, we have more pressing issues as a society.

Hopefully we can continue moving forward as a society though, and we can have better education in more aspects, I've been a teacher in the past and I can tell you some that students are really hungry for knowledge. So not all hope is lost in that sense.

There is a middle ground for sure. Installing an OS sounds like a solid unit in such a curriculum.