Your point about the "hockey stick" being a proxy for A/GW is an interesting one. Some self-serving history:
My first experience in looking at GW started only a few months ago when two of my managers started poking me with a rhetorical stick because they fancy me liberal and, therefore, I must be a "warmer". One started with "did you hear that global warming stopped?" and then proceeded to go off on a ranting diatribe on Al Gore. I asked him what "The Goracle" (I felt like poking him back) had to do with the science and he just responded that a British judge declared that his movie was FLAWED. (emphasis his)
Another manager told me to stop "blindly trusting science" (he vaguely accused me of argument from authority when I mentioned the NAS and the AAAS--I knew better than to mention the IPCC with him) and to "just read State of Fear and you'll understand." When I asked him what a science fiction writer knew about this that thousands of scientists missed, he said, "read the book; his arguments are sound." End of discussion, but not before another crack on Gore.
But through it all, I noticed that Al Gore, like the "hockey stick", also seemed to be treated like a Proxy for the whole AGW theory. My managers would attack him because they already hated him, I thought--as though bringing him down would bring A/GW theory, which he embraced, down with him. They did not, I noticed, take on the NAS.