The Govt. of India has already clarified that the app can be deactivated/deleted by the user if they don't want to keep it.
Given the huge second-hand market for mobile phones in India (especially amongst the large uneducated/unskilled subset of the populace) and their troubling use for all sorts of Scams/Frauds/Terrorism-related activities etc. you need State help to manage the problem.
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2197140&re... - Does NOT say anywhere that the app cannot be unregistered/deactivated/deleted. This is what the Telecom Minister was referring to.
https://www.pib.gov.in/PressNoteDetails.aspx?id=156294&NoteI... (pdf download popup which you can cancel) - Note the following excerpts;
Democratic, fully voluntary, user-driven platform and privacy-first app, activates only with user consent.
Sanchar Saathi app puts citizens first and protects their privacy at every step. It works only with user’s consent and gives full control over its activation and use.
Activates only after user chooses to register
User may activate, deactivate, or delete it any time
Designed to strengthen India’s cybersecurity without compromising privacy
I note that you are posting under an anonymous id.
Anybody who has even a passing knowledge of network/endpoint security knows that you need state intervention in the absence of widespread knowledge of cyber security threats in the populace. And no this is not a danger to the largest democracy in the world.