It comes back to the online party problem: It doesn’t matter how big the party is; it matters who will be there. And it has long been an unspoken law of the Internet that any online system that assumes people are capable of acting like mature adults is doomed to fail.
A network based on the premise that everyone does not want to hear everything all the time? “Are you crazy, Google?” we ask. “What do you think we are? Grown-ups?”