Wanting every living human being to die and our species to go extinct ("NTHE" stands for "near-term human extinction") is a little beyond not being professional PR folks.
Now, the author's position is both more and less nihilistic. The author also seems to think that human extinction is unavoidable, but he thinks the timeline is much more dragged out. He also seems to think that this is actually the preferable outcome at this point, given that global warming is our own fault, and that the only thing we should do is try to make it so that the planet is as well as it can be after we are finally gone.
Probably a desire for a peaceful fading out of the human species rather than a violent one, but it's still far beyond PR naivety.