On one hand the world is looking positively into the cryptocurrencies and blockchain, they want to regulate it for the best use. Contrary to that India still wants to left behind, this is a new revolution and India can step up and prove itself to world by accepting blockchain and crypto, they can make a proper framework and regulations but instead decisions like this which are the reason why India is far behind compared to the modern world countries.
Yes your right,This blanket ban on crypto wont help india in anyway.I think india is too lazy to create regulation or build infrastructure for blockchain technology.