I don't doubt the authenticity of the leaks and I don't doubt Snowden saw abuses of power. My question is, is this really big news? I remember hearing about it in 2006 and since then I thought we all knew the government was vacuuming up phone and Internet data like it was going out of style. This leak is more confirmation of what we already knew with a few new surprises sprinkled in, but nothing that could overshadow the big problem which was that the government is intercepting about all communications within the US.
What I doubt are some of Snowden's motivations and the amount of information and power he really has. He addresses the question of why he chose to not be anonymous by dancing around the question with some hand wavy answer that just about translates to "because I'm gonna be a patriot and/or a hero". He calls a lot of attention to himself very unnecessarily too. It's almost like there's a part of him that wants to feel important.
Another thing that doesn't fit the narrative around this story is Snowden's role before he became a whistleblower. We're very quick to jump on the idea that the US government is this incredibly powerful, nefarious organization that's been competent enough to conduct a truly massive global and domestic secret spy program for 8 to 15 years depending on your sources. If that's the case, how do you let individuals like Snowden, with what we know about him so far (he's a young high school dropout hopping from job to job somewhat frequently, working for a contractor, who even describes himself as no one special with no special skills - ie an "Everyman") have as much power and access as he claims to have? If you're trying to keep a secret you make damn sure to compartmentalize the hell out of your organization so that no one person can see the big picture without having to go on a wild goose chase to put all the pieces together. Hell, even I don't have access to things you'd think I should have access to at my job and there's not a damn thing secret about it.
There's no defending the NSA though. What's happening is wrong and there's no gray area there. However, I don't think Snowden can be any help to anyone anymore beyond simply getting attention and having something to talk about in the absence of any other concrete facts. I see Snowden as the guy who brought up an issue we should have never let go back when it first came out and because of that I'm glad he came forward. Other than that, I think he overstates his role and maybe even some of the particulars relating to this spy program.