The man is desperate for attention, but doesn't want to appear so. I guess.
A common theme among people who oppose Edward Snowden's is to criticize his character. Even within this thread people have resorted to name calling, dubbing him a "Drama Queen" and accuse him of seeking fame.
I suppose it's easier to attack a person than it is to attack the issues he stands for.
All his globe-trotting and statements just detract from the issues he's raised re: surveillance.