The world is near a 50 million year low in CO2 in the atmosphere. It has “recently” bounced off the bottom (possibly with some contribution of mankind, but that’s still not determined), which is a very good thing, because we were close to the levels where plants would start to die off.
We're still dangerously close to those levels.
I've tried to point out to carbon alarmists the central role of atmospheric CO2 in supporting life on this planet. When plants die off because of insufficient CO2, this means that everything that depends on plants also dies off from lack of carbon. You can't remove a ton of CO2 from the air without decreasing the existing biomass by a ton.
The answer I've received from alarmists is that it's okay for plants requiring a relatively high concentration of CO2 to die off, because there will still be other plants that can survive on lower CO2 concentrations. They simply cannot (or refuse to) understand the link between CO2 and total biomass.
All I know is that there are more weeds in the garden now than when I was a kid, —and believe me, my dad made sure I knew if there were any I missed!