I agree, I think what the author was trying to say that even Climate Change deniers don't actually believe that Climate Change isn't real, only that it doesn't

I agree, I think what the author was trying to say that even Climate Change deniers don't actually believe that Climate Change isn't real, only that it doesn't match their beliefs or would hurt their profits, and therefore ignore the reality and therefore would be committing fraud in perpetrating the denial. Either way, it's a pretty poor connection.