Climate change deniers are not skeptics.
Skepticism is all about critical examination, evidence-based scientific inquiry, and the use of reason in examining controversial claims. Those who flatly deny the results of climate science do not partake in any of the above. They base their conclusions on a priori convictions. Theirs is an ideological conviction—the opposite of skepticism.
The key words being flatly deny. Its fine to be critical of climate science where there are gaps or issues with the models. That’s skepticism. But to conflate weather and climate. Or argue that it isn’t happening because something-something, that’s denial.