300 is one of the ugliest and most pretentious film of the century: pectorals made in computer graphics, pompous advertising shooter direction (which is in fact Snyder’s “cultural” background) and a completely idiotic use of slow motion like we’ve never seen before.
I can partly agree with you if we talk about the graphic novel but I still regretted purchasing that comic, a pro-fascist and forgettable work.
Your smartphone is already an always connected device, and you can manually do periodical backups on external drives which is a good practice in any case.
You can also set which device rules the file modification (sent or receive only as a folder).
I think it’s ok for most of the people. If you have a tons of precious files to save I can agree with you, but I think this type of “off-grid self-hosting” is just the future of personal data management.