No, bitcoin can be tried to ban, but technically it's impossible to organize.
It is not possible to control, and therefore punish for using it.
Hence the ban is absolutely meaningless.
Your right bitcoin can be really banned on different country but still it was unstoppable. There are a lot of people who are using vpn to access different sites which they are allowed to earn bitcoins and that is normal because the value of btc in the market is very high so everyone is really attracted on earning it.