The American “right” latched onto an “anti-climate change” attitude — and took that to the ridiculous extreme of being proof-of-membership-in-the-group — in large measure as a direct response to the early (and, alas, continuing) attitudes of the American “left” toward the subject.
From the earliest discussions of the potential for climate change and what we might do about it, the left succeeded in tying “climate change” nearly inextricably to “highly coercive and disruptive government mandated emergency command-and-control remedies”.
In that environment, there was simply no way to be both ‘conservative’ and accepted as someone who took climate change seriously. You were either wildly progressive or you were a “denier”. As far as the green left and the media that echoed its talking points was concerned, there was nothing, and no room for anything, in between.
To the extent that the “left” succeeded in transforming “climate change” from a legitimate scientific and policy debate into merely another excuse for getting what it had always wanted anyway and for other reasons — a self-righteous justification for telling us all how to live our lives coupled to yet more coercive authority concentrated in the hands of politicians and government bureaucrats (to be guided, of course, by academic intellectuals) — it did mean that the opposition from the “right” to “climate change” was much more about opposing that coercive policy agenda than it was about the science, itself.