Since humans began adding CO2 to the planets atmosphere, taking plants off their starvation rations by creating a planet-wide greenhouse, plants have thrived. Data from NASA satellites, which since the early 1980s have been tracking the amount of biota on Earth, vividly demonstrate the results. As CO2 emissions grew in leaps and bounds, so did plants the data shows planet Earth is now greener than when those satellite measurements began.
Fallacy: oversimplification