Of course that's their perspective, as is the perspective of anyone committing an embarrassing or morally unscrupulous act.
"The thing I regret most is getting caught."
Secrets of this nature have a tendency to leak. If it wasn't Snowden, it could've been anyone else.
I don't think all of the NSA's capabilities or actions should be leaked, but reporting of confirmed infiltrations of US and allied companies and systems is fine by my book. All's fair in love and war, but we are not at war with Germany or Brazil or, hopefully, ourselves.