It's a small piece of a wider issue. The man-made aspect of climate change is simply in that it's speeding along a pre-existing cycle.
The climate change will happen regardless of what we do, but we could either slow it down or speed it up. We're very much speeding it up and not preparing for the next big shift into an ice age, which isn't a good thing. I don't think it's a settled issue and that it definitely needs more study, but you also can't just blanket deny that the climate on Earth changes and that our society would have a real fucking hard time dealing with the opposite end of Earth's temperature gradient when it flips due to albedo.