I realized too late that apparently the only way to get rid of the OneDrive directory structure is to manage the settings from within OneDrive itself! I'd already uninstalled it and removed, by hand, most of its folders.

Now if I try to reinstall OneDrive, it doesn't open when I try to launch it! I think it just gets trashed by all the changes I've made.

I guess I have to live with the OneDrive\Pictures and OneDrive\Documents folder forever, because they keep coming back when I delete them.

(I am somewhat loathe to reinstall Windows because just getting it installed on this laptop was a huge PITA in the first place, and it was extremely annoying getting all the ads & crap uninstalled)

e; actually wait, I may have been able to finish the job with the registry hack given here https://answers.microsoft.com/en-us/windows/forum/all/how-do...

Bless you Rodrigo. Bless you

ee; this is another example of a phenomenon I see a LOT, which is that just complaining about something into the void is often a critical step to solving a problem.