Is it?
Chinese companies are doing it for the profit, no doubt. But the West's unsustainable consumption standards should share the blame. China only do this because the West buy. And Western companies shift their production to China for cheaper labour, mainly.
Many American companies are actually doing the polluting. Not only Chinese companies produce in China. So, in a world with blurry boundaries, please take into account the production of Western companies, in Chinese physical borders, and stuff that China export to the West.
It is China now, it will be India, too, some years into the future. Where you write from the third iPhone (produced in India) that you bought in the last two years, that India and China are to blame for the pollution, where your second big heavy car sits in the garage, the rare earth minerals for which were mined in China, for an American company, and a roomba cleans your floor (also produced in China), that reads "carbon-neutral". You just hear the bell, and someone delivers your pizza, who is a climate refugee from a small pacific island.
You are not to blame. China and India are polluting!