I believe that user interfaces have just got appallingly bad. Compare Windows 3.11 which came with a paper manual and had about 5 pages detailing scrollbars, buttons, menus and window controls. That is all you had to learn, and you could use the system through consistent usability.

This seems to have been universally abandoned so that user interface elements are hidden (scrollbars), buttons don't look like buttons, and you can "scroll" or move window contents even if there's nowhere for them to scroll to (like on an iPhone where you can "scroll" past the boundary and it comes back. It makes everything an exercise in frustration as you have to grope the user interface to discover if anything is usable.

I believe this is why some of the older generation have such difficulty with basic features on phones and tablets - nothing behaves consistently, and nothing looks like you should be able to press it.