I refuse to believe that a smaller proportion of people know how to navigate a directory and unzip a zip file today compared to any prior year. A lot of people didn't know how to use computers at all a decade ago because they didn't have any kind of computer at home, not even a smart phone
When I TAed a CS1 course for a handful of years, I'd definitely say easily like 1/4 of the class would also end up needing a general primer of basic computer usage.
Ultimately, some people are just not interested in technology or using it efficiently.
It peaked and is in the decline. The number of households with desktops/laptops is in the decline. Fully native tablet+phone is the way a bunch of kids are growing up. Only computer usage in our local public schools is chromebooks.
