Dunno the details of this specific issue, but hyperbole is pretty standard for Snowden. I don't blame him too much. The guy has been through hell. But let's just say his Twitter proclamations aren't exactly neutrally worded.
His words reflect his personal experience as a person who feels compelled to point out legitimate dangers to a free and democratic society.
It turns out that “free and democratic “ societies react harshly to criticism of their powerful agencies.
Ironically, he has ended up having to flee to a place that is much, much less “free and democratic” but letting him freely criticise the rest of the world is politically useful for now, so he is allowed the bully pulpit.