Earlier quoted context omitted.
Verbal purity? They are two totally different concepts. This isn't about making sure you use the right term, it's making sure you understand the difference between the two. And yes it was clear. I think anyone reading the article should come to that conclusion. Your comparison was shallow and silly and I called you on it.
I always thought that global warming was a subset of climate change. The fact that the title of the article included climate change made me puzzled as to why global warming was used.
Not at all. The term "climate change" didn't come into the discussion until the temperature data started to diverge from the predictions. The terminology change was one of many things done to "hide the decline".