Well it's been a good 15 years since I was a JW but at the time we had heaps of kids DF'd. The strange thing is when it happened it was a massive group of them getting DF'd all at once. Around 15 or so total. Several boys around 15 - 17 years old got DF'd for trying pot a few times, others for minor sexual stuff. Also an elder committed adultery with a pioneer sister and a former CO in the hall got DF'd for cheating on his wife with, you guessed it, a pioneer sister. That hall was filled with scandal. LOL!
The PO was actually removed the following CO visit over it all. HAHA! He was a jerk anyway. I got hauled in the back room just because I saw a witness from another congregation smoke a cigarette and I didn't tell on him. They were furious as to why I wouldn't say something. The reason was simple, he told us all he was getting DF'd at the next meeting because he smoked so there was literally NO REASON to tell the elders, they already knew, but they wanted me to be in Gestapo mode I guess, reporting any and all infractions. UGH!
DF'ing people does that religion no good. The grand majority of the kids DF'd never returned. It's hard for kids to get kicked out and then have any desire to come back. I mean seriously, to get reinstated you have to go through shunning at the KH and then you still can't have any friends outside the KH? That's far to unreasonable. I'm still in contact with many of the kids that got DF'd for pot, and the good news is they all have very happy lives now and don't even smoke it anymore. If they had never gotten kicked out they might still be slaves in that cult.