Ironically, most people I meet who are "science deniers" are doing so for good, scientific reasons. They don't trust the appeals to authority. They have been mislead by scientists before. Etc.
Whereas most people I meet who are science supporters are doing so for the least scientific of reasons. They trust in those appeals to authority. They sweep aside mistakes of the past and flaws in the process
The people I tend to think of when I see the phrase "science denier" are flat earthers and creationists. These people do not reject science for scientific reasons. It's almost always either paranoia or religion.

Some climate change deniers might be a little more scientific, because they can at least argue with credibility that what we know about climate change is "common consensus" rather than anything that can be predicted by means of experiment. But these same people should be on the fence, rather than firmly in the "bullshit" camp.