You've been there since PDP, a bit different perspective.
My PWW thought I was nutz for taking a new laptop, reformatting it, tossing win 8, installed Win 7 and required apps, and handed it to the wife for school work.
He thought I gave it a lobotomy by "downgrading" it.
I tracked down "In the beginning there was the command line", threw it on the projector screen, and told him to read it.
THAT's 60 pages or so, I'm not reading that!
FU, you are are reading the 1st couple of pages so you have a clue of what an OS is, and then we can have the discussion.
5 pages later he had a good start, and I emailed it to him to read the rest in his room. I'll quiz him.
He started with Win, is a minor gamer, and does minor windows bitching but it is his world.