this assumption that being a denier is the conservative thing to do.

Fits right in with their total denier mentality.

They deny Evolution. They deny that there are classes in American Society. They deny there is racism in America. They deny that Reaganomics has been an abject failure. They deny that Social Security isn't "going broke". They deny that there is anything positive about Unions. They deny the truth of anything they don't understand or agree with.

I could go on, but I think you get the picture.