I'm assuming you're question is why would they buy the futures?
If they really believe that climate change is not real, then they would benefit from owning the futures which pay off when if the climate really doesn't warm more than 2°C in the next 3 decades.
If they really believe that climate change is not real, then they would benefit from owning the futures which pay off when if the climate really doesn't warm more than 2°C in the next 3 decades.