Its quite sad, I have been using bitcoin for 3 years now but because of the crash, bitcoin has been labeled a ponzi scheme and there are plans to ban it in india
I don't think the Indian government actually thinks that bitcoin is a Ponzi scheme. They're just saying that to discourage people from investing in decentralized Bitcoin because they can't make money out of it. The government doesn't want its people to use any other currency aside from its own.
Bitcoin is a ponzi program, that is just a false information spread throughout India, and this information comes from some bad users, some users can't make money with bitcoin, it doesn't come from the Indian government because as you say, the Indian government only warns people not to participate in bitcoin when it has some risks and the government cannot solve these risks, they do not want their people to have unnecessary losses, do not believe in the rumors and the news has no authentic evidence, please look at the reality