Sorry. You weren't yelling. But yes, it is belief, which is why you use the word "denial." People who question or reject the version of climate science that you think is correct--that you "believe" --are essentially heretics. Immoral, misguided or even evil for not accepting the truth.

Remember, skepticism is the highest duty and blind faith the one unpardonable sin. The author is presenting an argument that questions the prevailing orthodoxy. Rather than dismiss his arguments as heretical and unworthy of consideration as SO MANY have down through the centuries, why not do your scientific duty and debate the facts with him?

Point out something you think is wrong and present your argument. If you won't do that, then you're just another heckler on the sidelines and your opinion doesn't mean squat.