We need privacy at the societal level though. Even if I have perfect privacy for myself, bad actors who invade everyone else’s privacy are still able to influence society in a way that has never been possible before. Think of the election interference made possible solely by the huge amounts of data these companies have.
Even if I have perfect privacy, I’m still screwed if I live in a society where 99% of people don’t.
So construct a government where individuals are not secured or compromised their liberty depending on the outcome of an election. You speak of the popular will being corrupted by an external power, but the tyranny of the majority is enough of a threat to the safety of the individual and the tenants of natural law anyway.
Your perfect society is everybody's perfect society, one where collective force is used to secure individual liberty, and not choke it.
Even if I have perfect privacy, I’m still screwed if I live in a society where 99% of people don’t.