The problem with auto-patchers is that they're usually platform-dependent. What if you want to run this on a Steam Deck? That's Linux, not Windows.
(That being said, Wii Backup Fusion is a Windows program, but it's an existing program from over a decade ago—a time when using Linux for gaming tasks was much less of a thing)
The only thing I'd say is that the instructions on the archive.org page could probably use a bit clearer organization since, for real hardware, all you need to care about is the text beginning with CREATE A NEW ISO.
EDIT:
...though I'm now realizing even the bullet points could probably be streamlined a bit. Another easy way to streamline things would be to have the file names of the redux version actually match the original folders, thereby not requiring manual renaming. This would of course also require tweaking the riivolution xml file but that's easy enough.
And even if the file names need to be kept different between use with Riivolution and making a new ISO, there is the trick of using a 7z archive with a large enough dictionary size so that it simply compresses the total file size down to the same as if you only had one copy of the file rather than two.