The health care system has been doing this for 20 years. We are breaking that up by allowing users to choose relays, clients and which keys they want they data encrypted to.
https://image.nostr.build/6c17a30b5216a29c49419914e21dd2c38128fcf3ac2697ee06c741a05aa4233b.jpg
Yep, that's why it's important to know your relays and work with them to manage your data correctly. Encryption can only go so far.
Internet registry is also terrible when one can just stay private with a Nostr key