Well, Mr "nsashill42334", account under 24 hours old, I don't think that Mr Snowden should be trusted without question. However it seems unlikely that he is setting out to dupe people into using encryption for some reason or other.
I think that he (she?) was comparing some extra-alarmists' (Al Gore-type) tendencies to attribute every abnormal weather pattern to global warming. We should all agree that crying wolf weakens legitimate claims about climate change and ocean acidification.
It's sad that the NSA and government has lost the faith of Americans to the point that the word of one man is taken without question.