This could be true.
A few years ago, my wife was a member of a non-JW parenting forum. There was a JW sister on there. My wife was friends with this sister but they never met in person.
Later, my wife began to have doubts about the truth and she decided to post photos of our kids birthday parties. This upset the sister who told her she needed to tell the elders about her doubts. There was some emails going back and forth between them.
Well, unbeknown to us, this sister took it upon herself to find my wife on the website yellowpages, so she could find out what congregation we were in. Having done that, she contacted our elders and provided them with the bday photos and emails from my wife.
The elders called round unannounced and asked that I be present and then asked my wife questions. This sister gave them enough rope to hang us with. We could not deny the evidence.
It was decision time but they gave us time to see what we wanted to do.
So yes, this Facebook/Youtube info could be true because there are individuals who will protect the Society at all costs.
Don't underestimate those who defend them.