It is politically unacceptable to the global warming cultists to state tgat China pollutes.
The cultists grew up watching Ted Turner’s communist youth indoctrination cartoon “Captain Planet” where the chinese kid portrayed China as being the absolute smartest nation in regards to the environment while the American kid portrayed Americans as stupid.
China smog has even made the liberal press here.
At least one smog day a year in LA is blamed on the Chinese.