Warm storage with checksums and redundancy is the only long-term safe option.
I would recommend making a pair of HFS boxes, that storage will last far longer than pressed cold media.
I mean, I do both. But physical disks make it easier to stay away from the internet when I want a simple entertainment experience without distractions.
Fair enough, that I can understand :) Maybe a LAN-only box that boots into jellyfin could help, but there definitely is something unique to physical media.