...is that it criminalises non-voting, argues Pratap Bhanu Mehta in the Indian Express:

Whatever one’s views on the duty and right to vote, there is something deeply problematic about punishing non-voting. On merely practical grounds it is likely to give the state immense powers of harassment. It is a deeply democratic value to worry about state intrusion in our lives. One is not reassured by the fact that Gujarat government officials have been quoted as saying that one of the penalties under discussion is denying BPL cards to those who do not vote. Not having prescribed punishment as part of the legislation but making that part of the rules is itself an odd interpretation of democracy. It is not an accident that most of the countries that have compulsory voting have to desist from enforcing penalties. It will also be interesting to see how lists for local government elections are created and used. One unintended consequence of this drive may be to reduce the incentives to have your name included in a voting list.

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Also See: A 'Disciplined' Democracy?