That's quite right. They always bring their own version of every tech and ban the westerner version. That's how China deals with the west but it is not like it won't have any impact on bitcoin. It will have its consequences. Millions of (some may even say billions) Chinese people will be forced to use the C-BTC and that's probably create a pressure on the btc prices. In the long term it will be fine... unless the west bans it too.