The article says his available data starts at 1895. However, the point of the article is to reverse engineer a biased chart, and to show it's biased intentions

The article says his available data starts at 1895. However, the point of the article is to reverse engineer a biased chart, and to show it's biased intentions. The article does not try to determine whether climate change is real or not (even though the author's opinion is obvious). So it doesn't matter if the author's data is limited... it matters that the author of the biased chart has been cherry picked.