"Climate change denial" is not a coherent platform. There may be some who hold logically consistent views (whether they are real or not), but they are not necessarily consistent with each other, and in any case the majority of people don't care.

As long as one can say that mankind should not take any action to avert climate change, most "climate deniers" are happy, and whether the myriad of supporting arguments contradict each other is not their concern.

For example, what's Trump's opinion on whether the Earth is warming or not? Does he even care?