All of the people who published anti-climate-change studies on behalf of the oil industry also had credentials. Even people with credentials can succumb to temptation.

And I didn't say that this piece was commission by the NRA. I said that it would not surprise me to learn that it was. I'm advancing that as one hypothesis to explain the very strange too-good-to-be-true correspondence between the author's rhetoric and the classic tropes and talking points of the NRA. That might all be a coincidence, and it might be that all of the oversights and faulty reasoning are really Leah Libresco's work alone. But that would imply that Leah Libresco is incredibly stupid and a really bad statistician, and that seems unlikely to me.