Nationalized bank accounts should never be trusted or used while dealing with crypto. Also, how can these banks even know about crypto transactions when the deals are p2p?
It is not easy but if they really want to weed out the transactions then they can really do that if you are getting transaction from different accounts across the country they can sort that out who is doing these transactions and they can question you about the different sources of money from different accounts, so it is possible if they really wanted to target users.
I have a history of dealing in wholesale electronics back in the day and my customers were from all across the country as I shipped stuff out from the kolkata port. There was no mention of any commercial or current accounts, most of these transactions occurred through the savings account. My dad and I primarily used Bank of Baroda, UBI and SBI accounts in our names to do this. And I reckon this is a common practice among traders across all the ports of India.
By your logic, the banks should close down my account because there are multiple payments coming from different sources? Isn't that stretching the imagination a bit too much? There is no way one can track the reason of a crypto transaction through p2p trades. And you guys are forgetting the most important factor of them all. It is not prohibited to trade or acquire cryptocurrencies as individuals. Only the commercial applications are prohibited, as in exchanges, shops, web stores, etc. If you want, you can even get paid in crypto for your services. Of course they do not say this explicitly anywhere but I have checked from numerous high ranking officials who are involved in the crypto taxation process that have confirmed this.