This seems like more a flaw in the legal systems desire to make decisions based on analogies, rather than a reason for the right to exist. There's a public goo

This seems like more a flaw in the legal systems desire to make decisions based on analogies, rather than a reason for the right to exist. There's a public good from the right to avoid self incrimination, it's less clear what the public good of protecting people's right to keep content hidden in the face of a court order.