Thanks for trying, but it appears to me you're paranoid. The user directory in Wire is public. It is no secret that you're on there. They need information about whom you're connected to for the service to work. I'm not worried about GIF searches, or contact list. I'd prefer the contents of my conversations with family weren't archived on remote servers. Wire accomplishes that in the best way. It's a useless academic concern that audio level information would be in headers, and the paper you linked is of no relevance. I still see no reason why I'd not want to use Wire. For talking to family and friends in a reasonably private way we cannot get from using services from Facebook and Google, I think Wire is an excellent application.