Occam's Razor, man… the problem with conspiracy theories is that they require everything to work flawlessly and EVERYONE to keep their mouths shut. nonsense.
See also Mark Klein's denouncement of their AT&T spying, which prompted a lawsuit by the EFF back in 2006, charging them with having created an "illegal and unconstitutional program of dragnet communications surveillance".
There had been plenty of leaks over the years.
It's nonsense to think Occam's Razor is a kind of proof.