People did question it -- he was getting spy accusations as soon as Russia let him in, but then they looked at the actual documents and realized that Snowden is irrelevant as far as the content is concerned. You don't need Snowden's motivations to interpret any of that.
What benefit does it serve you to suddenly get all of your enemies and frenemies to suddenly change all of their communication methods to avoid the NSA? You're spying on them without them knowing about it -- that's exactly what you want!
Also Snowden ending up in Russia has never seemed suspicious to me - where else could he go that would protect him from both legal and clandestine extradition?
Facts are important if you want to promote your theories/wild fantasies.
Maybe there's some alternative motive we're missing - but I doubt it was to prove they couldn't be stopped even after exposal.
I'm still really surprised no one questions the Snowden narrative. A man who earned $200k a year, worked remotely in Hawaii with his smoking hot wife, suddenly decided he has a conscience, either collected data slowly over time or did a massive data dump and released all this information to Greenwald and Der Sepgiel. Then he flees to Russia where he openly tweets against Russian policy.
Unlike many other stories, there were no where near the level of government denial. Media outlets ate it up without looking into any of it.
I really feel like Snowden was an intentional leak, either to show the NSA could proclaim their spying abilities and no one would be able to stop them, or they wanted to profess they had capabilities they don't actually have.
In either case, the US government is still spying relentlessly, creating war zones and expanding military powers. People say I'm a "tin foil hat conspiracy theorist" when I say that the CIA most likely created ISIS to destabilize Syria.
It's not crazy, it's what the CIA has been doing for decades. The 1973 Coupe in Chile, Bay of Pigs, School of the Americas, Iranian Contras .. the list is as long as you want to make it.
You should question each "leak."