ABC's documentary "I can change your mind about climate" was a slightly flawed format - two prominent Australians trying to convince each other. But on the upside, it did give an insight into the thinking of people against action on climate change. This clip is an example.
Though disputing the science, it's more the consequences that are being objected to. A mind that sees the cure as intolerable will actively search for a reason not do take those actions. The easiest (but perhaps the most pointless) way of doing this is to cast doubt on the diagnosis.
But as Naomi Oreskes points out, by deliberately basing a position on bad information we only ensure that more severe actions will be required later.