I think you're example is a good example of how weak the arguments for privacy are. All I see are hyperbolic examples. My favorite ones are where people try to bring up how the lack of privacy lead to horrors like NAZI Germany or Iran as if the US is somehow comparable. And they say "But government can change!". Only in la-la land is the US government going to turn into Iran. No developed country in the past 50 years (even ones where privacy is not considered a god given right) has slipped back in totalitarianism.