When people deny anthropogenic climate change by saying "well it got warmer in the past", do they think that climate change is a stochastic process?

Yeah the Earth has gotten warmer in the past, but if not CO2 emissions, what process that drove warming in the past is driving it now?

When people deny anthropogenic climate change by saying "well it got warmer in the past", do they think that climate change is a stochastic process?
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