I don't mean to give the intercept a pass here, but what Greenwald was doing wasn't "journalism" in the sense that most people think of it. This isn't "his" story - he didn't break it and he didn't do the primary research.
Does his background give him insights that could make for a good editorial? Perhaps, and the Intercept used to pull no punches on that kind of content. But it's not like he deserved any real "credit" or "blame" for the story itself, which was reported by other outlets.