To support this claim I'd like to give a common example in vim. Everyone hates `esc`, right? Well I use `<C-[>` instead. Yeah, that's control plus left bracket. 2 keys! But this is a hell of a lot easier that lifting my hand from the keyboard to reach to the top left corner. I just drop my left pinky slightly and move my right ring finger slightly. Both actions are quite normal in how I just type and my wrists never lift. Using two hands is what makes it easy. I neither type with a single finger, I use every one of them. :w<CR> is not hard because :w might as well be one key (plus I'm always hitting : so the action "burns in" as any constant motion does), w is just a normal key requiring very little movement from my rest state, same as pressing enter (pinky).

I'll give the parent that this is slightly harder than <C-s> but they got the right conclusion for the wrong reasons. But if that trivial extra effort is what's required for what I can do in vim, I'll gladly make that trade. I love my panes, buffers, windows, completion (see :h ins-completion), my visual mode, my search, my replace (way more powerful than many think), my tags that allow me to walk through the program, and how I can effortlessly move my cursor around the screen and around the document. It takes far less effort to move my cursor to where I want than it is to lift my hand and grab the mouse. I love that I can open all files in my project while my computer doesn't even blink, and I can do some refactors of all my code with a single line. No IDE has ever come close to giving me these abilities and I haven't even mentioned the half of it.