Interesting to read someone else considering a govt attack.. I started a thread just now wondering that myself though I hadn't yet heard anyone else voicing such questions.
The fact that BCash is so centralized and has a lot of Chinese mining power means it can be easily controlled by the Chinese govt. If it were to make headway as the true bitcoin has the potential to do.. it could play a role in undermining the value of US fiat - instead giving power to the Chinese govt. If you are scared by the great firewall of China.. be scared of BTrash the centralized China Coin.