True, but without the CO2 the atmosphere would be stone cold and little water vapor would exist. The earth's oceans would be frozen with only slush during the daytime near the equator. The CO2, albeit small, gives us a base GH effect that lets water vapor do the rest.
That basically jives with the article. Without CO2 we are screwed. With "too much" CO2, we might have some problems, but those pale in comparison and can be easily mitigated.
I just don't see any easy way to mitigate the consequences of the collapse of the Greenland Ice Sheet. Move inland?