Quote Originally Posted by xerxe View Post
How did being an intergovernmental organisation make it partisan? I can guess, but I want to hear your take on it.
Because it has scientists advising in the domain of public policy, whereas before the scientists were focused just on the science itself (even if they drew the same conclusions). Since they advised on public policy, this lead to a reaction on the part of those lobbyists with short term interests in mind you mentioned, kind of like "well if they can do it, so can we". And the propaganda about climate change not being real promoted by said lobbies works with some people mainly because they have the perception the IPCC is imposing something on them, and mixing science with politics.

Of course that is my understanding, I could be wrong, but as of now that's how I see it.