@SigHunter Huh, well I can report that I have used Audex for many regular pressed audio CDs I purchased, and it never has a problem ripping them.
My best guess is that whoever wrote the website was a little careless and used “CD-ROM” as a generic term for any kind of CD. 🤷
@arran4 @voracread With some specific packages there are conflicts between different versions, so you can only have one at a time installed even if they have different slots. I think a few of the core KDE packages are like that. I know that I had to remove some parts of KDE 5 when I installed KDE 6 on my Gentoo system.