Please don't troll here. Pollution in those countries gets massive attention. The mainstream news articles you cited are an example. Those countries are part of the UN and Global community that is covered by the Global climate strike. Much of China's pollution is in industry manufacturing exports to the rest of the world.

If you have good faith interest in reducit pollution, please contribute efforts to reducing pollution, not backseat driving another volunteer. Greta Thunberg doesn't owe you anything.