It is definitely a two-edged blade. It might serve as a moral pillar to Greenwald, but it also makes him easy to manipulate. One could feed the leak at the time where it would do most damage and know that where other editors would think twice Glenn would jump on it.

Sadly I have the feeling that good faith journalism has no role to play nowadays. It doesn't have the reach and credibility it needs to justify it. People now "inform" themselves in a decentralized manner, seldom break their bubble and don't care much about facts preferring narratives. The hardest facts and science can be presented and it will still come out as narrative.