This is what I meant by how hard it is to talk about 'all'. Someone says all and then someone gives an example that's not all and so what are we talking about?
Ultimately I think there are differences between country A and country B's methods and etc.
In terms of internet traffic, my understanding is that the NSA would have access to a significant fraction of all of it via this room (and perhaps others). A significant enough fraction that there’s a high likelihood any given internet communication could be intercepted. Maybe not every time but enough stuff routes through the US that eventually it will be seen.
So to me I’ve feel comfortable using “all” in a loose (empirical) sense. But I see your point that it’s not as clear.
