On the other hand, if the government legalize it, it will have to be considered as a legal tender which may bring significant outrage from the banks who are supporting the development of India through funding.
So the government has taken a midway. They have kept the window open for the willing taxpayers. This way they will not loose a significant amount on taxes as well as pacify the banks. But that's a temporary arrangement. The government is still waiting for the final report and recommendations from the committee they have formed to decide the impact of Cryptocurrency on India's economy.