Your constant inference that all of the extra CO2 in the extra atmosphere will be absorbed into plant material is just plain wrong.

1. Where do you get this idea from in the first place? Why do you think that CO2 is the bottleneck in plant growth, and not, say, the amount of sunlight? Either you've done the calculations to prove that CO2 is the bottleneck, in which case show us, or you haven't, in which case your statements are baseless and idiotic.

2. If CO2 is the bottleneck and you're right in your inference that plants would indeed absorb any extra CO2 put into the atmosphere... why is there ever CO2 in the atmosphere?

3. If plants would indeed absorb any extra CO2 put into the atmosphere, why aren't they absorbing the extra CO2 put into the atmosphere?

I will interpret your flat-out ignoring of the question about your "university work" to mean that you were just bullshitting and have zero relevant experience in this field, probably serving some kind of janitorial or administrative role at a college.