Honestly, this claim made me a little agitated and upset. It is very obviously false. This made it very interesting to read about, mostly because that's not how our world works. Photosynthesis will never stop because CO2 will never not be produced. If that were to happen then they would stop emitting oxygen and we wouldn't be able to breath.
It was super interesting to dig a little deeper about this topic because there were many articles out there that vouched for this claim. It's also very scary to think how some people can be so ignorant to topics like this. Climate change is very real.
Don't get me wrong, climate change is heavily ruining our world, but I think CO2 absorption would be the least of our worries. When I think of climate change, I think of greenhouse gasses, polar bears losing their home, and how we are (corporations) choosing money over our world. I wouldn't have even thought about the CO2 levels, so it was interesting reading about it. I think more people need to be educated on this topic, plants don't just stop their basic nature.