Now there's an interesting observation. I'm not quite sure whether you're right, but quite possibly.
Looking around my local libraries and bookstores, most of the books that deal with using personal computers do seem to be from the 90s/early 2000s era. The question is whether the decline in these books indicate that they are not needed any more, or that they are not wanted anymore (due to "hidden complexity")?
Earlier in the pre-PC age, for the hobbyists you had similar experiences with home computers like Tandy RadioShack, ZX spectrum, Commodore Vic-20 or 64, not to mention the Amigas and Ataris (and all the others Iām old enough to have forgotten).
Early Macs also let you mess around (and mess up) your system too.
It was an exciting time in computing indeed, but it did in no way start with the PC.
But nowhere in that process did I know anything about IBM 360s, or how to program or run them. I more-or-less understood the mathematics involved in the data processing. And I could somewhat parse the Fortran. But I had no concept of anything like a directory hierarchy.
With an IBM XT 286, on the other hand, it was all in my face.