are you not familiar with the concept of onboarding? Many websites and apps have this tour thing that highlight things that user haven't used, when appropriate.
The Mac does have onboarding, and it covers the basics. If it got into every single feature that someone calls "unintuitive," the onboarding would be 27 hours long
is it in the form of non interactive animation? Yikes. If not, there is no problem with 27h, you just don't be ridiculous to do it all at once, instead of contextually.
There's a continual onboarding process in iOS, the Tips app, which I think tries to tell you details when it sees you doing the basics of some feature.
