If you're on apple or windows or something normie friendly either hardware or software it'll be sent a crypto lock up command and be rendered useless anyone. You want instructional manuals from decades ago because they didn't presume you have a 3D printer or whatever on hand to build the thing in question.

Kindles, plex servers, NAS in general, whatever, don't count on them working when TPTB decide it's no internet time. I mean for christ's sakes Apple already told you all it's doing client side scanning for bad content.

You can also use Plex and MakeMKV to back up your DVD and BluRays to disk and stream them to your local network devices.