Looks like my redhat bug has been marked a duplicate of a bug someone else reported back in Aug 2021, apparently unaddressed to date:
https://bugzilla.redhat.com/show_bug.cgi?id=1999060
…which itself is a clone of:
https://bugzilla.redhat.com/show_bug.cgi?id=1998460
Regarding the dupe, in my defense I searched bugzilla for strings like: “redhat 9 installer help” and came up with nothing… not sure why these don’t show up in the search, so they probably get a lot of dupes for this reason. But anyway…
I’m going to leave this thread unsolved and probably stop updating, as it remains a problem upstream, and since it’s been over a year since the initial bug was reported, it seems this isn’t going to be solved anytime soon in 9.0.
So when it comes to anyone using the Help buttons in the installer, as “Mr. T” once said, “I pity the fool”.