I see your point. I guess I feel that the majority of people _are_ capable of realising real life doesn't imitate Hollywood and Snowden quite rightly needs to take some sensible precautions if he is to have any hope of sustaining this story and effecting the public debate and ensuing policy changes he's fighting for.
No, this is in fact real life imitating Hollywood -- Snowden has turned himself into a Doomsday device! I am hooked on this story like some people are hooked on "Keeping Up With The Kardashians."
No, this is a guarentee the information gets out regardless of what happens to him. Snowden is going to get the information out. Or, if they kill him, the information gets out. This puts those who don't want that information getting out in a difficult position, but it doesn't change his own situation very much.