“Luke-warmists” may be defined as those who appear to accept the body of climate science but interpret it in a way that is least threatening: emphasising uncertainties, playing down dangers, and advocating a slow and cautious response..
They are politically conservative and anxious about the threat to the social structure posed by the implications of climate science. Their “pragmatic” approach is therefore alluring to political leaders looking for a justification for policy minimalism. (Source: The Conversation)
Very good analysis by Clive Hamilton about some of the most influential climate policy critics.