China doesn't need any more people, thus the one baby rule. The CCP is inherently non religious so they have few compunctions about getting rid of people. If they wanted to disrupt the world's economy I doubt that they would have any problems with losing many of their own people in order to reach their goal. Who knows, maybe they think that tanking the U.S. economy might keep Trump from reelection and it would bring in a dufus to deal with them. This might sound far-fetched, but is it really?