Oh yes, for sure. That comment was a lazy shorthand for something like this: "Some unscrupulous people have played up past conjectures about global cooling in order to discredit what is now said about global warming, and a great deal of what they have said on this subject is bullshit. By referring in this context to global cooling, I am not endorsing any of that bullshit." But that seemed like too much to cram into a comment that was actually about something else, and no way of making it much shorter sprang to mind.