Yes, it is frustrating to watch. I believe JW's NEED others in the org to survive. They are scared of their own thoughts.
Typically what happens is something happens in THEIR lives that impacts them personally and then the find out who their "friends" are. Some people have to touch the fire and feel that it is hot. Others know it is hot and stay away. I like the boiling frog analogy that someone else posted. It is so true.
We have watched our family experience abuse within the org all of our lives. They go back and make the excuse, "they are imperfect men." I really think they are scared to be without it. They have invested too many years to leave.
I hope one day your son can see it for himself.