True. At the same time, there are pretty solid rules against recording the audio of someone's conversation that would be unambiguously illegal and allow for actual prosecution.

But it's an interesting question: if someone credibly proved that FB was "wiretapping" on such a massive scale, would they get prosecuted? How much could they do in their own defense? Are they so enmeshed that prosecutors wouldn't bother?

Feels like a case of "unstoppable force meets immovable object".