

First, I wanna say I appreciate your reply. It’s well made. I believe you, mathematically, about how ZKP’s work.
I just think that when rubber meet road, there will be potholes. Example, strong encryption cannot be broken, practically speaking. The social media companies make real E2EE. But they control the client. So they simply scrape post decryption from the user’s device. It’s true, the E2EE was secure. But that didn’t matter in the end. There was a way to circumvent.
We’ll see about ways like that with ZKP. I’m not smart enough to know how it may happen. Only that the incentives will be big. Encryption isn’t defeated by breaking the math. Neither ZKP. It’ll be some other way. Something sleazy.
the social media site will not discover anything about your identity beyond a binary “is above 18 years old” statement.
To discover anything else, they would BOTH have to collude in some significant way.
I would say, social media can already discover most ppl’s identity. Without having to collude at all. There’s a whole ass industry of identity resolution, even when ppl don’t mean to give their own identity. Would social medias stop doing that, just because now ZKPs? I’m afraid it may deliver a false feel of security.

Oh, sorry, I shoulda been specific. I meant cases like the Whatsapp class action. It hasn’t been proven in court yet, tho. The prosecution says they have evidence Whatsapp and Meta get access to E2EE messages since they control the client. But it’s also important to say that Meta is denying they do this. It will play out in court.
Whether it’s proven, or not, it’s possible to do it. The mesages have to be decrypted for view.
Agree, but that condition is doing some heavy lifting. As in the alleged Whatsapp case.