What did you think was in the leaks? In my experience, when people say their parents or friends didn't believe what they said was in the leaks, the parents and friends were usually right.
The fact that the UK government recently passed a law[0] to make this legal makes it pretty clear that this is real.
[0] https://www.theguardian.com/world/2016/nov/29/snoopers-chart...
(Not agreeing, just explaining.)
This is why it hasn't been ruled illegal. Do people actually believe that phone metadata collection is illegal but the crazy thing Greenwald misread PRISM to be is not? That's going to trip grecy's university-educated family's bullshit detector.