And to confirm that experience, until participating in this conversation, I also didn't know that it could be possible to efficiently use Emacs with the key combinations of some "more familiar to common people" editor.

And I'm still confused: if you say "Keep in mind that all three combinations are central to Emacs 1) C-c is used in million combinations 2) C-u too 3) C-v scrolls a page down."

What then? Does it mean that I can't use the "million combinations" if I want Ctrl-C to mean copy? What is then the start of "a million combinations"? Why should't help system simply adjust to display the "start of million of combinations" as the thing I selected at the start? If I like Ctrl K instead, couldn't that be "the start of the million of combinations"?

And why should I care that "C-v scrolls a page down"? The keyboards since at least 1987 have a physical "Page Down" key, why should I not use that then?

(And they surely don't have a physical "Meta" key).

I hope that's a usable example of what confuses at least one kind of a beginner.