They banned the biggest paperbill because of the blackmarket.

I was not aware!

So no need to protect when we don't collect in the first place:)

Yes - also collection is not legal or the government doesn't have the authority to collect as per the current laws of the country. So the previous government created an independent authority and made them do the illegal thing. The current government, which originally opposed is supporting it. So right now the Aaadhar aka UID has become legal as of 2017, but the privacy and data protection is not available. Its a paradox and the stupidest stupid thing ever!