I initially thought you were speaking of CPU/ram efficiency until you threw in vscode, so I think you mean developer efficiency. Vi/vim is what you're accustomed to. I've worked with nano since it came out, I think 2004-5ish. I have no idea what I used prior to that, probably vi.

But I am MUCH faster and more efficient with nano than I am vi/vim/emacs. My text editor of choice is like my IDE of choice, it shouldn't be a problem at all for anyone to just accept that I'm getting my work done in a different application.