I've only watched the first 10 minutes. It's an interesting theory, and still most scientists agree on human caused climate change. He admits that he's not disagreeing with it, just that there might be ANOTHER contributing factor. So even if his theory is correct, we're still adding fuel to the fire.
From the author, "The intent of the phrases “this study concludes” or “this study proves” presented in many of the Plate Climatology Theory articles is the authors way of indicating that other study data, graphs, phrases, hypotheses and conclusions have been used by the author to formulate his own points of view, hypotheses and conclusions.
...
This is the authors best legal attempt to clear the air with those who disagree with the Plate Climatology Theory."
He's deliberately misrepresenting other studies, but hey, he's got a disclaimer!