If the current government bans bitcoin in India, that will be the end of the current government. Because the government has failed big time to address our basic needs and invests money in to building big statues and bullet trains. They have also failed miserably to provide job security to the youth of the country. A majority of the bitcoin users are young age people who are earning a decent income and a decent life using their earnings from bitcoin and related activities. That's a blessing to the government that they are not looking for a job. Otherwise it will worsen India's already over crowded job market. So I doubt that Modi government will take such step. But if they take any such steps, they are going to be dumped by the youth in the next election.
nice points, also i would like to add that banning of bitcoin will create more awareness among all and will create issues like very thing in country creates, issue will rise and rise more and more will hear it often leading the people to see what actually it is. If still ban is not lifted ,users will find different way like vpn, different servers just like what is happening with torrent website