This video does not challenge the fact that CO2 causes climate change. This video is about the Milankovitch cycles which are only one of many factors influencing climate. The Milankovitch cycles are important over long very long periods of time: tens of thousands of years. It has little effect over decades or centuries. There is strong evidence that C02 and other greenhouse gases powerful affect our climate.
The Milankovitch Cycles are changes in the Earth's orbit and rotation that cause the Earth's climate to change over hundreds of thousands of years.