The government should have the ability to violate privacy subject to judicial review. Otherwise, no law could be reasonably enforced.

Successive governments have undermined the authority of judicial review and I'd support anyone campaigning to change that. But, the solution isn't to try and build a system that prevents the government from ever piercing the privacy of citizens. That's just a recipe for anarchy.

Honestly, maybe a few years ago I might have been on your side. But, this whole cryptocurrency saga has just soured me on techno-libertarianism. A society needs an effective government (accountable to the people) that can enforce the law.