After a weekly patching and several boots, what Ed suggested continues
to work. This includes e-mail, browser, dnf upgrade, dnf install, zoom,
and video downloads (via Firefox add-on and via command line). As best
as I can see, nothing got broke and everything works as it should. So
I'm tagging this REALLY solved. I thanks Samuel for bringing up the
additional caution, Ed for the solution, and others for the further
discussion.
I did find a youtube video of a musical performance of Man of La
Mancha. I tried to watch it. Poor focus. I did not watch all the way
through. But now I know where the song "To Dream the Impossible Dream"
comes from.