It would seem that lots of co2 in our atmosphere indeed is actually a good thing. Even according to NASA' Moderate Resolution Imaging Spectrometer and NOAA's Advanced Very High Resolution Radiometer admit that leads to a lot of greening of at least a quarter to a half of the earth's vegetation/forests. An article from 2016 on NASA's website titled "Carbon Dioxide Fertilization Greening Earth, Study Finds" shows this. This makes sense when you consider photosynthesis.
And to be certain, the science isn't settled on this issue either. There are many scientists that question the version of climate changed pushed by the mainstream media and several governments and their agencies. The Global Climate Intelligence Group's (CLINTEL) document "There is no climate crisis." Signed by over 1600 signatories shows this, among others too.