Facebook talking about respecting human rights and privacy... If you want to make a truly secure messaging platform release the client and server side source code or gtfo.
The point however is that the government of India is forcing private corporations to break privacy related measures to suppress civil liberties.
I think if your information needs security, don't put that information on the internet.
All popular end-to-end encrypted messengers manage user's public keys for them. And usually provide the client code too. And may have unencrypted backups. And may have account recovery mechanisms that can be abused.
Each of those makes it easy for the user, but degrades security.