Hogwash!
I am that commenter that you quoted above, and, what I have to say is that...
The environmental movement is not about sound science, but about idealistic agendas, and, while there might be certain points in their "science" that are valid, it's only to try to gain a little bit of credibility so that they can then turn their argument towards selling that agenda of theirs.
Inserting certain valid points into their "science", while most of their points are very questionable and improvable and massaged, makes the entire "science" behind their arguments, "junk science".
I want a clean environment, and a healthy environment, and clean water and clean air; in that sense, I'm no different from what most people, and perhaps most "environmentalists" want. But, I'm not about to go and massacre the scientific method in order to advance any agenda which I might have. Global warming ("climate change"), is mostly about an agenda, and when you have such shysters as Gore,spearheading the effort, and who has no training whatsoever in science, then you know that it's an effort mostly based on an agenda.