I don't know. They promise a particular aspect of privacy and presumably deliver on it. They don't promise absolute privacy - that's my whole point.
I think given the exact wording of what they promise, I can't reasonably expect that my conversations are private only between me and the recipient.
> The extra layer of security provided by end-to-end encryption means that the content of your messages and calls with friends and family are protected from the moment they leave your device to the moment they reach the receiver’s device. This means that nobody, including Meta, can see what’s sent or said, unless you choose to report a message to us.
But of course we won't know either way until it's tried in court.
Eh plenty of wiggle room here
> This means that nobody, including Meta, can see what’s sent or said, unless you choose to report a message to us.
If they were playing games and got sued, I'd be quite surprised if they didn't get laughed out of court for claiming that “nobody” actually meant “the FBI”.