@hakui ja I understand your point. But I'm speaking about basic usage and not about a text editor that's almost an OS.
I'm saying that there's a minimum knowledge level people should have, just like driving a car.
And as it's implied, yes, I'm also taking into consideration that not everything is useful, should they know how to install their own distro ? only if they wish, otherwise hire someone.
Same applied to people with cars, they don't have to know how to change oil or filter, but they must know how to check their tires and oil level etc... (it is mandatory in france).