It's just a rumor to scare people. There are numerous other articles in the past about
China's ban but it never happened. And IF it happens, not much will change. Bitcoin can easily survive without China.
As mentioned even without China the growth of bitcoin will be big, but certainly to some extent a large scale impact will be experienced during the early days. The reason is that, at present the majority of the network of digital currency is dependent on China. When it comes to bitcoin, mining and user base is quite high in China than other countries.