Just picture Charleton Heston shouting:
“CO2 IS PLANT FOOD! ...IT’S PLANT FOOOOOD!!!!”
From Malthus to Paul Ehrlich, the big problem was seen as “we have too many people, we are all going to starve”.
As of 2009, the big problem became “We have too much plant food, our food supply will be abundant”.
Yep - the plants “eat” the C and return the O so we can thrive too.