Technical solutions to privacy are not required to be alone. They're required to be ubiquitous. If your country is an authoritarian hellhole, you encrypt everything to help you not get murdered by the secret police. If your country has strong privacy protections, you encrypt everything to help ensure that it never becomes an authoritarian hellhole, and protect you against bureaucratic failures as defense in depth.
To invade your privacy, an attacker should have to break the law and break the encryption.