Completely disagree with the article. Snowden made a brilliant move by getting ahead of the administration on this. With stories this big, human element is an irresisitible aspect. He would be the story regardless of whether he would put himself in the center.
There is also an interesting depth to his views. Junior or not, his understanding of Prism is clearly nuanced. While NSA collects all this data, it only really uses it for active investigations and tracing leads. The current system and the way its being used isn't really the problem, as he himself implies. Constituational issue is pretty narrow and has to do with the fact that analysts are given guidance to follow 2 hops from an overseas target, meaning they can eavesdrop on an American who hasn't communicated with someone overseas. However, the actual issue is the capability itself. What happens to such a capability tomorrow? This is one of the places where slippery slope argument is very apropos. How long before this is used for copyright enforcement fishing expeditions or paedophile hunting trips?
Looking ahead, this probably won't turn out well and the reason is simple - people are sheep and they don't care. What will happen is the same program will now exist publicly with a few appropriate briefs from Holder and 5-4 acquiesence from SCOTUS. People who think that's better, delude themselves. It's like your wife cheating on you openly and publicly rather than secretly and discreetly.