Tech people should be concerned about this because we are the ones with the knowledge necessary to do something about it. Because there's no transparency, it's impossible to tell how many people have been harmed by the violation of their privacy. It may be that nobody here is in that group: hacker news readers are probably mostly white and upper-middle class, not usually a target demographic. But if we don't do something about invasions of privacy, no one will, because no one else is capable.