The hotspot is integral to their theory, because it would be evidence of the extra evaporation and thickening of the water vapor blanket that produces two thirds of the warming in the climate models the carbon dioxide itself produces only one third of the projected warming, but is amplified in the models by water vapor. But in reality there is no hotspot, so there is no amplification, which is why the climate models have exaggerated temperature increases.
Fallacy: misrepresentation