Banning crypto is just the tip of the iceberg. The administration in power currently has massively damaged the confidence of international investors as well as the citizens in India by taking extremely heavy-handed top-down and often ill-planned decisions. See 2016 demonetization, 2020 national lockdown and the 2021 farm protests.
Also the country is veering towards authoritarianism rapidly, and this bitcoin ban is just a mere symptom of a much much larger problem that lies ahead for India.
I was talking about the 'brain drain' in that context.