You can extend this argument to saying everyone should master the command line. They're all interfaces. There's no "right way" to use a computer.
Jobs turned the computer into a product used by everyday people who don't give a shit about how it works, and that's fine. That's empowering because it lowers the barrier to entry.
That said, we've been in a much worse "eternal September" since the iPhone shipped.
Your files are in a magic place, directories don't actually exist they're a hierarchy we developed to meet the traditional concepts of a 20th century office. Tags and searching are just as valid.