Firstly, I'm always dubious about claims of converted sceptics. You get so many from the religious fundies.
In this case, something is DEFINITELY not right.
He doesn't make a claim about what has caused the warming of the last sixty years. But claims that the evidence is really strong that man was the cause of the PREVIOUS 200 years of warming.
Well, if that's the case, then CO2 is not the cause. Because as everybody knows, the CO2 levels were practically flat till 1950.
So what the fuck is he claiming? Humans caused warming over 200 years, but it wasn't CO2?
There is no logic in that claim at all. Ludicrous.