He opened up that nasty underbelly of espionage/government surveillance/individual's rights violations for the whole world to see...
Okay, I can agree with that.
I think you had to have been born on Mars to not know, or at least suspect, that most of it was going on in the first place, but we can agree that he spilled the quantitative beans on it, to some extent.
...making it harder for governments to fool/con their citizens into taking violent actions against other countries whenever leaders want the masses to do their dirty work.
Has he though?
So far as I know absolutely nothing has actually come from Snowden's actions, other, perhaps, than a little lip service being paid by the White House.
It certainly hasn't led to any kind of serious and concerted effort to reform America's national intelligence infrastructure or to roll back, or even check, some of the more obviously unconstitutional surveillance abuses that the American government has come to adopt over the past decade.
Truth be told, outside a very small handful of political news junkies I'd be surprised if many Americans have any idea what Snowden actually released.
Most people know he's a whistleblower, and most have a least a basic opinion on whether it's right or wrong, good or bad, in respect to the whistle being blown on the US gov, but I don't think most people are paying enough attention that it would actually have an effect on their support for some future government military action.
I think you're reading into Snowden's actions the results that you would like to have seen come of them rather than analyzing what actually has come from them.
Frankly, I don't think Snowden's actions amount to a hill of beans.
No Noble Prize for him.
Not because I don't think he deserves it (I'll reserve my opinion on that in the interest of non-partisanship) but because I don't think such an award can be justified.