The temperature rise from increasing atmospheric CO2 is not linear but saturates. In other words, a doubling of CO2 is needed for each 1C increase. So, for example, to increase 2C, 4x the CO2 is needed.

Atmospheric CO2 was reaching a minimum before the industrial revolution, a minimum not seen for hundreds of millions of years (if memory serves correct). Plants need CO2 for photosynthesis, ie, CO2 is a basic ingredient necessary for life on Earth!

It is a miracle that humans started to replenish atmospheric CO2 and reversed the slow asphyxiation of plants happening across the planet. The planet has become greener due to the increase in atmospheric CO2. Why? Because plants can survive e with less water when CO2 levels are higher. There is a reason why greenhouses pump in CO2. Plants also out gas less water vapor when CO2 levels are high (water vapor is another greenhouse gas).

Conclusion: Atmospheric CO2 is your friend and most people opining on the matter know next to nothing. This includes scientists which are a diverse bunch and rarely have any expertise in climate matters more than the average layman. In other words, vast majority of scientists are no more qualified to speak than a rando on the street.

Edit: Global warming is much more complex than you describe. What you describe is only true in a simple closed system with a controlled atmosphere and controlled spectral input. You conspicuously omit the role clouds play and solar flux plays, to name a few. The atmospheric CO2 was higher during many ice ages is one fact amongst many that shows the CO2–global temperature correlation is not as simple as low-info regurgitators of propaganda believe it is.

The temperature rise from increasing atmospheric CO2 is not linear but saturates. In other words, a doubling of CO2 is needed for each 1C increase. So, for example, to increase 2C, 4x the CO2 is needed.

Atmospheric CO2 was reaching a minimum before the industrial revolution, a minimum not seen for hundreds of millions of years (if memory serves correct). Plants need CO2 for photosynthesis, ie, CO2 is a basic ingredient necessary for life on Earth!

It is a miracle that humans started to replenish atmospheric CO2 and reversed the slow asphyxiation of plants happening across the planet. The planet has become greener due to the increase in atmospheric CO2. Why? Because plants can survive e with less water when CO2 levels are higher. There is a reason why greenhouses pump in CO2. Plants also out gas less water vapor when CO2 levels are high (water vapor is another greenhouse gas).

Conclusion: Atmospheric CO2 is your friend and most people opining on the matter know next to nothing. This includes scientists which are a diverse bunch and rarely have any expertise in climate matters more than the average layman. In other words, vast majority of scientists are no more qualified to speak than a rando on the street.