A majority may, but the ones that show up in related threads or vote on comments and so on overwhelmingly believe that climate science isn't science.
It's a battle I've had on HN from time to time for years ever since the big email leak that proved "fraud" years ago.
I don't bother much anymore though. HN is not influential at all in terms of climate policy and there's already plenty of information available to anyone that would consider changing their position anyway.