If flight capital from China really were the only/major use case, most of these people would probably convert at least 50 percent of their bitcoins into a different currency once they moved the capital overseas. However, nearly 99 percent of the transactions are paid by CNY. These look more like domestic transactions to me.
I don't understand your comment, because that's the entire point of the person you are responding to: that only current real world product of blockchain technology is Bitcoin, and the only real world use case of Bitcoin is flight capital from China; like... what exactly do you mean by "and"?