Let’s be fair here and not take words out of their context. The two words following your quote (and part of the sentence) were per capita. Your link supports what I said. The trend is tapering off but Chinese people still have a smaller carbon footprint than Americans.

That said... sustainability is not just about CO2. It’s about ecosystems like the Baikal lake being ravaged. If the Chinese get to move into Siberia we may start to lose some of the largest natural ecosystems on the planet. But Bosonaro is doing that already.

Anyway, besides this point, I am sure there is a lot we agree on.