For that matter, "I estimate human emissions of CO2 caused 49% of the warming of the global climate" is a different question from "I estimate human emissions of CO2 caused 51% of the warming of the global climate". Is it really a fantastic expression of rationality to say that people making the first claim are basically creationists, but people making the second claim are upstanding rationalists whose numbers help to demonstrate how much popular support I have?

If you try to lump people into discrete categories over a continuously varying question then you are inherently introducing ambiguity; the first step toward setting up a Worst Argument in the World is the creation of overly-broad categories, after all. If you demand that Turquoise people self-identify as Blues or Greens, you shouldn't be surprised when you get suspected of having motives other than the pure refinement of rational thought.