But what's really schadenfreudelious is the editor's explanation (h/t Grist):
After some time interacting with the regular denier posters, it became clear that they could not or would not improve their demeanor. These problematic users were not the common “internet trolls” looking to have a little fun upsetting people. Such users are practically the norm on reddit. These people were true believers, blind to the fact that their arguments were hopelessly flawed, the result of cherry-picked data and conspiratorial thinking. They had no idea that the smart-sounding talking points from their preferred climate blog were, even to a casual climate science observer, plainly wrong. They were completely enamored by the emotionally charged and rhetoric-based arguments of pundits on talk radio and Fox News.