While I appreciate the sentiment, I think it’s unrealistic to expect the greenhouse gas concentration in the atmosphere to decrease. For that, we already would need net 0 emissions AND some sort of carbon capture system in place.
For now, what must decrease is greenhouse gas emissions, and the article admits that that is what happened (but the decrease was so low it could be attributed to natural fluctuations).
Good man. I agree 100% - the more warming we get, the bigger of a difference each .1 degree makes. So we should only get more aggressive about climate change the worse it gets instead of giving up.