Yes I wonder if its a chain reaction, I believe the org has a lot who are uncomfortable with were its going, some maybe lurking, after another wacky broadcast they finally feel so uncomfortable with it they go from lurker to poster, other lurkers see their first posts and are inspired to do the same.
That's my imagined scenario. If all the people waking up knew how many of them there were they'd probably walk out in droves. This fear of "its just you" is a powerful control tool.