MakeMKV (at least in windows) lets you rip a remuxed mkv without having to rip everything. So you can just select the titles, audio, and subtitle tracks you want without ripping all the other stuff. You don’t need to make a full backup and then pull all that out.
Alyx came out 4 years ago, and is recognized as one of the best VR titles of all time. It’s a full 15 hour game, so not a tech demo. I’d say that’s a hit.