While true that many plants do respond positively to higher amounts of carbon dioxide, the claim that greenhouse gas emissions are actually better for plants and agriculture is specious at best.

The claim doesn't account for the extreme weather that comes as a result of accumulated carbon dioxide in the atmosphere.

Droughts, flooding, and larger more widespread wildfires are not good for plants or agriculture. Increased pest infestations and pollinator decline are also not good for plants or agriculture.

While a few high-latitude regions may see localized benefits, the global consensus from organizations like the Intergovernmental Panel on Climate Change (IPCC) and the Food and Agriculture Organization (FAO) is that climate change slows agricultural productivity, reduces crop yields, degrades food quality, and destabilizes supply chains.