I think the major difference is that I believe that allowing a branch of government to break laws and lie to our democratically elected leaders is anti-democratic and totalitarian, thus anti-American.
I agree that I don't like it but can anything with the support of the plurality if americans by definition be anti-american? Maybe anti-democratic since the proper way is a constitutional amendment, but even that is a stretch since by 2012 three election cycles tolerated compromising liberty for security and justified violating the constitution because of national security, and snowden's leak on an election year wasn't used by republicans in their effort to retake congress or by trump when he ran against hillary. It can be argued that as unfortunate as it is, the apathy if the american people and their disproportional fear of terrorism that resulted in the NSA's surveillance was very much democratic and american.
Keep in mind that this same democracy and sentiment had led to japanese internment camps in WW2 and even worse in other situations.
I have a feeling history will rule in favor of snowden but I just wish he moved to a country not hostile to the US. Especially these days when Russians themselves are fleeing Russia, it's hard to defend Snowden. His Moscow relationship undermined whatever intention he had to bring change to the NSA.
The bigger problem is that he was trying to change a symptom, while ignoring the disease, that is the sentiment of the american people. I fear it would take the abuse of the NSA's powers against the american people at scale by some tyrant to fix the root cause.