"People never learn using an OS"
To me the GNU core utils are closely related to the Linux Kernel. Is "chmod" a programm or an extension of the operating system? Yes, you could use Linux without the GNU stuff, but nobody really does this (and vice versa).
I think this is one of the more profound distinctions when it comes to Linux vs Windows. What people comes to mind are often comparisons of "Can LibreOffice Calc be a good replacement for MS Excel?". But the real difference is that Linux is all about enableing the users while Windows is all about dumbing down users. The core of Linux is having a toolset of things that do one thing particularly well. Windows is all about having a "one size fits all" approach where the UI of PowerBI looks a lot like the UI of Excel even though they are vastly different from each other.
Even the most stupid user can use Linux nowadays, nevertheless you should encourage users to learn more and become curious instead of abstracting everything away and trying to enforce a digital lock-in for the sole purpose of maxing out some companies income.