I think you misread the post above. They're saying that the govt should be allowed to issue subpoenas, and nothing more. They shouldn't be allowed to mandate ba

I think you misread the post above. They're saying that the govt should be allowed to issue subpoenas, and nothing more. They shouldn't be allowed to mandate backdoors, or hack suspect's machines, etc. And citizens should be free to use cryptography to control their information. Also, "Impossible" is not the right term. "Extraordinarily expensive" is a better one. And yes, anyone can share public keys with each other offline and have end-to-end encrypted communication without help from a service. But advertising companies and the govt are not incentivized to make that practice convenient, and people typically do what is most convenient.