I don’t think that is the disc that apple is talking about, they are talking about a distribution model, not back ups. For video most optical disc archiving is not useful, that is why LTO has became the best true archival route.
I love it when spec sheets list “3 hours” of video, well what format. HD? SD? HDV? H.264? ProRes? big different. Not saying there is not a place for this, I think this is for people with relatively small file types that needs long term archival.