You wouldn't believe how many people are actually incompetent using a pc beyond using default values and browsing the web, for example in school one day I had to help classmates save their project documents to the school's server, because they didn't know how to browse the select folder dialogue box (or whatever it's called), and another dude in my class didn't know how to use the shortcut bar at the bottom of the window in PowerPoint so he literally scrolled through the ribbon for like 2 minutes before he managed to launch the presentation (and this guy is a straight A student to note), I also heard stories about coworkers which didn't know how to open a zip file or how to forward an email

The oversimplification of software is really problematic, since everything is made to be as straightforward as it can be people just go with it and then have a problem when they need to do something a different way