Plus, as someone who held a clearance in the DoD (former interrogator), I will say it can be hard (especially for someone like those journalists who never held a clearance) to tell what can directly hurt someone else. Handing off NSA program documents could have potentially put the lives of CIA and NSA agents and sources around the world...but we would never know. Even the families of those people wouldn't know. All they would know is that their family member didn't come home.
Snowden complained loudly about a test answer. That's it.
The point in that riveting doc was simple, those that complained too loudly lost everything, thankfully not their lives.
Edit: That being said, if we ever do get evidence that China or Russia did manage to get that data during his trip there, I'd change my tune immediately. That would be high treason, at least if it was intentional.
I guess you'll be changing your tune when you find out China and Russia read the papers containing all the TS/SCI and ECI leaks. They definitely have the information. ;)