I find the author is projecting heavily having entirely bought into the unix way of doing things he's become his own jailer. That a filesystem is somehow "fundamental' to the function of a computer. Nope, it's an abstraction designed to help the programmer, it should be thrown away. These kind of unified approaches are going to fail to specialization every time. There are endless things to understand, deprecated tech is at the very end of that list.

If it was only the Apples' and Google's who thought sandboxed apps were the future you might have a point, but most tech savvy people arrive at something that looks and awful lot like sandboxed apps. You see power, most see[1] a[2] dumpster-fire[3]

: [1] ; ls /usr/lib | wc -l

: [2] ; ls /usr/bin | wc -l

: [3] ; find /usr/share/man/man* | wc -l