You can build dapps with privacy in mind. It's an OSS-friendly world where you can verify the contents of the smart contracts you are interacting with and see what the contents of a website are if the website is deployed to IPFS. It's not perfect since it's an entirely new way of building web apps, but it's better than proprietary systems.
You can create new wallet addresses, for example, when you want and sign in with those. Or your dapps can use https://magic.link/ and users can just use private email addresses if they want.
Generally, for surveillance I think the legacy systems we're all still using are much worse. Firstly because we don't always know what they're doing, and secondly because these companies can say one thing and change their mind next week. Like how Apple was supposedly a privacy champion, and now they're leading the charge for building on-device surveillance tooling.
Sorry, but "private email" is an oxymoron. This system sounds open, but also indelible. Can you make a self-destructing file? Sounds like your pseudonymous data can tracked, fingerprinted, and correlated to your real name, to me. And no rush, the data ain't going anywhere. Privacy's gotta be engineered. Today's strongest crypto will be plain in 100 years.
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.
You can create new wallet addresses, for example, when you want and sign in with those. Or your dapps can use https://magic.link/ and users can just use private email addresses if they want.
Generally, for surveillance I think the legacy systems we're all still using are much worse. Firstly because we don't always know what they're doing, and secondly because these companies can say one thing and change their mind next week. Like how Apple was supposedly a privacy champion, and now they're leading the charge for building on-device surveillance tooling.