Not the person you asked, but I have early-twenties (non-technical, generally from lower-SOE backgrounds) users who have literally never used a desktop / laptop

Not the person you asked, but I have early-twenties (non-technical, generally from lower-SOE backgrounds) users who have literally never used a desktop / laptop operating system before, and have had to be taught how to type a web address into a browser. Manipulating a mouse / trackpad was a new skill to acquire; understanding folder and file structure, same; pull-down menus; Office apps. These aren't stupid people - they're well-qualified for and good at the rest of their jobs - they just haven't been in a position where anything "tech" has ever involved anything other than an app (or, I guess, auto-loaded browser shortcut?) on their phones. Using keyboard shortcuts is black magic, which some of them take to with delight, and others will never remember to try.