I agree with you that privacy has to be engineered. Please consider getting involved in some Web 3 projects!
I'm not an expert yet but I don't see why self-destructing file sharing couldn't be built in the Web 3 world. You could also build hybrid apps, where most of the app is a dapp and the sensitive feature like self-destructive file sharing are housed on proprietary systems guarded by a company with a reputation for security/privacy.
I think that if today's strongest cryptography becomes plain in 100 years, I'll be okay with that since I'll be gone and the future generations will have figured out more advanced cryptography :) Or society will have moved away from privacy because we're all linked to each other with neural laces and everyone would know everyone's deepest thoughts.
I'm not an expert yet but I don't see why self-destructing file sharing couldn't be built in the Web 3 world. You could also build hybrid apps, where most of the app is a dapp and the sensitive feature like self-destructive file sharing are housed on proprietary systems guarded by a company with a reputation for security/privacy.
I think that if today's strongest cryptography becomes plain in 100 years, I'll be okay with that since I'll be gone and the future generations will have figured out more advanced cryptography :) Or society will have moved away from privacy because we're all linked to each other with neural laces and everyone would know everyone's deepest thoughts.