1) In India are you free to become whatever you want and that is granted by the constitution?
How about drug smuggler, tax evasionist, organ trader?
I'm fairly sure there's a clause with an exception for illegal activities. Should this be the case, then their central bank's specific ban of cryptocurrency, which isn't illegal, has no legal grounds.
There might be but them failing to post the entire article of the Constitution must have some reasons
I've yet to hear that a court order can make an activity legal, if the principle of separation of powers in a democratic country really work as they supposed to, only the Parliament would be able to change it, not a court.
The thing is, it's technically not illegal. There's no law that states banks can't deal with cryptocurrencies. It's apparently just a circular from their central bank, which could be scrutinized and found unconstitutional by the courts. If nothing else, this is democracy's checks and balances system working.
And the same stands for the opposite.
There is no law that forces the banks to deal with cryptocurrencies.
Besides, you can't say that a measure taken by the central bank is unconstitutional, the high court can say that for laws,(laws can become unconstitutional, once you break a law...it's just breaking the law) and in order to oppose this the only thing that can be done is to pass a law either giving cryptos a status or preventing measures from the Central bank that can affect cryptos.
But again, this can only be enforced by the parliament.