Around 2015-16 I was astounded to observe a then-colleague,
who had worked with computers for decades, exhibit this workflow when switching back and forth between different application windows on their desktop computer[1]:
* Move hand from keyboard to mouse / touchpad
* Click "Minimize window" button in upper corner
* Mouse over to task bar / dock[1] and click the other app
* Do whatever it was they were doing (copy/paste?) there, then...
* Repeat the process to switch back to the first app.
* Lather, rinse, repeat. Repeat. Repeat. Repeat...
Yes, I mentioned the existence and function of Alt-Tab[2] a couple times. Not too many. Apparently not enough. I have later observed the same thing with at least one current colleague[3], also with decades of experience in their line of work.
Eh, sorry, "Why are you recounting all this?", I hear you ask? OK, to get to the point: People who work this way do actually get to see their OS desktop a lot.
I think most people used to do that back when the graphical "desktop" UI was new; I may well have done so myself, 30-35 years ago -- not for very long, though, AFAICR. And I wouldn't have thought that very many do nowadays; I'd have guessed most people who've started to work with computers after ~the turn of the century would have faster, more fluent, ways of working ingrained.
___
[1]: Can't recall if they used Windows or a Mac at the time I noticed this.
[2]: Or Cmd-Tab, or whatever it was on the Mac.
[3]: Whom I'm sure uses Windows.