I'm really showing off my age here, but it has been all down hill since skeuomorphic design; because the focus was primarily on usability and teachability as first-class concepts. Heck, companies were spending millions on usability research at the time, much of which was used. I taught people to use computers in the 90s and early 2000s, and having those concepts matching to real world objects helped immensely. Recent…
The middle school here has a "computer applications" class that covers all that kind of thing. Definitely not iPads only.