

Can you explain a little what you mean with:
So they simply scrape post decryption from the user’s device.
As far as I know, no social media company’s posts are E2EE. After all: It’s not possible to have both public posts and E2EE. “Direct messages” to other users can be E2EE but you’d have to trust the company with the encryption keys.
The only condition that requires Zero-Knowledge Protocols to function is that your device is not hijacked by hackers (and there are no deliberate backdoors and such). This can be achieved by having the app be open source with regular security audits. The social media company can do nothing to identify you, nor could the government (unless again, they collude and share secrets).
But yeah, social media can already identify most users because of surveillance capitalism. The goal however is to ensure identification is not in any way made easier via age verification.







Yeah, that’s again a little different. You have to fully trust WhatsApp that they are doing what they promise. You can’t really verify this yourself.
Besides, if the app is open source, backdoors are generally more difficult to implement. Especially for something like E2EE, where people look very closely at what the application does with keys. Same with age verification in my opinion. You’d need to pull off a lot of gymnastics to put in a backdoor, see the xz utils one which was only achieved through several obfuscated stages in a codebase rarely ever looked at by another human.