My theory is that they get nervous when somebody leaves and appears well-balanced, specially if there was no scandalous fornication case involved in their leaving Noah's Ark.
They may be only drones, but as a group they are trained to drive ex-jws to madness. For example: group stalking, impertinent questions, while a number of them start ignoring you can be a very volatile cocktail, specially after you discover TTATT.
Also some of the apostate sites don't look genuine, they look designed to find out exactly what was that opened your eyes or to dissapoint you, specially if you are on the first stages of waking up.
Who knows what they come up with in order to explain the cases of successful apostates who start doing great in life after leaving the spiritual hell. It would be interesting to hear. Who could be a microphone on the wall sometimes!