No it isn’t, it respect’s ctrl+c, SIGINT and gives useful feedback for new users. Many shortcuts are immediately shown on screen.
If you open vim the first thing you will see it’s a text describing how to close it. Not saying other things are easier for a new user but closing is pretty simple. EDIT: if press ctrl - c vim will show you what you should press instead
And the whole time you have nano open it shows you all the shortcuts how to save and close at the bottom, so no, closing nano is not harder.
I had to look up the upside down V meant Ctrl, which makes sense to me now that I know, but I had to Google that.