No sevenheart. Show me that graph again as well as other people. Ask if they can read it. CO2 at 400 PPM may not be that bad for the human and plants directly, but at a certain threshold, too much CO2 is harmful. But also, keep in mind, 400 PPM is dangerous at the global climate scale, and this can cause massive warming. The context depends on determining how dangerous CO2 is.
I remember you. You're that guy who gave me a shitty graph and told me to read, even though there was literally nothing on there. You are stuck in a delusional reality because you are a lazy conservative and don't want to clean up after the damage previous generations caused on Earth. The UN is withdrawing on overestimates but climate change is still a problem. You better read this sentence carefully. It is not a bad idea to prepare for a potential oil shortage in the far future right now. What are you going to do in 2100, you dinosaur? Be like, "there's still oil left, we don't need to do anything," is that what you're going to say? By then, the air might be bad for you to breathe anyway. It's generally not a bad idea to start preparing now. And no, reducing coal has reduced acid rain, and Freon was banned separately. We are taking the steps necessary for the environment, but you are stuck in a delusional reality. You act like you're so much smarter than the whole world, but the thing is you're not. So stop getting cocky with me.