Yes, thats why I thought it was funny. He didnt think it through much
What climate scientists do is not idiotic, although there are lots of people out there capitilising on climate change (or Enhanced Global Warming).
Yes, carbon pollution is not the whole story, but it definately does have an impact. Sun's radiation passes through Earth's gaseous outer spheres, is absorbed, and re-radiated as infra-red (heat). With more CO2 the radiation is less likely to pass through the atmosphere into space; it will more likely bounce back to earths surface. IE warming the planet, as not as much radiation is escaping.