I'm not being confrontational on this point. I just want people to realize that CO2 is not correctly called a pollutant.

CO2 is an essential component of the Earth's atmosphere and all plant life would cease to exist without it.

This is just nitpicking and stating what is clearly obvious.

Plants are also an essential part of the biosphere but excess plants in unwanted places are still called weeds. The same argument applies to excess man-made CO2.