Curbing Blockchain evolution?

The concept of blockchain technology with rise of Bitcoin in 2009 which has created a decentralized ecosystem where the transactions are peer to peer while bypassing third parties & their heavy commissions. The transactions are executed with fast speed and low cost also there is full transparency with a comfort that the user is not required to reveal his/ her identity. The moral is that you are having full control of your assets and can do transactions as per your will.
Further as more and more people are interested and using blockchain technology so what is the meaning of banning bitcoin/crypto? Can anyone ban bitcoin in reality or its a part of fud which is created repeatedly every 2/3 months to keep out weak hands and took advantage?