In my opinion, that oversimplifies it. PlayStation and Xbox have disks without the “Next Gen” Version on it for years, but nobody cared. At this point there are also no games that have this license-on-a-cartridge.

After all, you can still sell the cartridge, something you cannot do with a completely digital game.

Unraid doesn’t use images you can download. They check the USBs UUID GUID before installing. I am not defending this, but as it’s going to be the boot device for the server this is a little handy feature.