My observation is that the scientific community is making assertions of what is more or less the current understanding of the state of global warming to the best of their knowledge. Advocates and opportunists are taking this and converting it to something like "98% percent of scientists agree that global warming is 100% caused by man and we are absolutely doomed if we do not do something right now." (obviously I am being somewhat hyperbolic.)

So the scientists are observing this and thinking to themselves "What these people are saying is not technically true, but it seems like most likely an effective approach to invoke action amongst the general public, so we'll just keep our mouths shut." It may very well turn out that this is in fact the most pragmatic approach.

What I am saying is, it may turn out that this isn't the most pragmatic approach. Addressing climate change costs money, and lots of it. People generally don't like spending money unless there is a very obvious and more or less immediate benefit. Now imagine a convincing leader comes along who validates this distrust, and can point to legitimate cracks in these assertions (actually, I don't think Trump even had to do this, but don't underestimate the power of YouTube propaganda videos)....you might just find yourself with a president that you never would have imagined could have been elected.

It's interesting in a thread where we're generally talking about the nature of public conversation, where I am actually mostly on the side of believing that man-made climate change is a real thing, but my sense is that most people think (or speak as if at least) I am completely incorrect in the things I say, that there is no disagreement in the scientific community on some of the specifics. It's really quite an extraordinary claim. (iirc, this is one of the big reasons Joel Spolsky quit blogging, he found that he had to qualify every single sentence with multiple sentences of disclaimers, as too many people refused to discuss in an intellectually honest way, always nitpicking individual statements while completely ignoring the spirit of the discussion. Likely putting words in his mouth somewhat, but you get the idea.)