It's not climate change that deniers have issues with, it's the alleged man-made cause of climate change that have deniers pushing back on the issue of climate change.
As a global society, we seem to believe that the over-use of carbon fuels over the past 100 years is what's causing climate change to occur now. The truth is, the Ice Age was caused by unprecedented volcanic eruptions around the globe which blocked the sunlight from entering the earth's Troposphere which is the earth's lowest atmosphere.
This action alone pretty much shut down life on earth as earth's inhabitants had otherwise come to enjoy it at the time. The burning of fossil fuels over the past 100 years will no more cause volcanic eruptions to occur anymore than the burning of fossil fuels will be the root cause of tornados forming during untraditional seasons throughout the year.
The world is not switching to electric cars to reverse the effects of climate change; the world is switching to electric cars because most known oil reserves will be depleted before the end of this current century.
Any oil that is currently being discovered is very difficult to extract from the earth compared to how easy it otherwise was to extract in the mid-1970's which marked the peak of global oil consumption and the historic time of 'easy oil'.