In the same way an unencrypted telephone call is also like a postcard (or posting a tape), but we still have laws protecting that information flow, like the client attorney privilege.
What we are seeing now is just a power grab from governments and organizations to have "novel" forms of communication classed as less protected so they can reap the benefits of being able to intercept it. This is exactly how a legally protected and democratic society breaks down.
There are only two ways to solve it. Either protect all forms of communication without discrimination, or use or invent technology to prevent it being possible in the first place (and not outlaw that technology). There are no other ways.
