Sure, Notepad transfers to other GUI programs better than Nano transfers to Vim or EMacs. But that has little to do with Notepad and more to do with GUIs typically supporting similar shortcuts. Like I said, it's an imperfect analogy.

I think you missed my original point. Most people wouldn't describe themselves as "good" or "bad" at Notepad or Nano. They're simple programs designed for simple editing. The learning curve is very low for both. Advanced editors have differing learning curves, but they're all a lot more steep.

And my original point was that, because many people do only simple editing in a CLI and more advanced editing in a GUI, it makes sense that Nano became the most popular for CLI due to its shallow learning curve.

vim does not respect nano shortcuts and modes are simply a barrier: an extra keypress and another thing to keep track of. It slows you down significantly.

You obviously haven't used much vim if you think modes slow you down. First it means you don't have to bring your right hand all the way to the arrows whenever you want to move the cursor, secondly it means you can use shortcuts without adding a modifier everytime - this translates to fewer keypresses.