When you have iCloud Music Library with iTunes, Genius is not actually an option to turn on or off. It is embedded in it and so is always on. To fix this issue I would have to sign out and turn off iCloud Music Library. After signing in again I am worried that it will want to go through my whole 60k library again and everything that was matched before will then go in limbo. Hence I think I am forced to wait until this matching problem is fixed. I've had iCloud Music library for >10y and there have been hiccups but this is the worst.