I was a secret apostate in my old congregation, back in the day. There was a whole "ring" of us. And by apostates, I mean a group of us, who as JW's didn't swallow all the b.s. hook, line and sinker and were willing to discuss it among ourselves. I left the state and the JW's years later but heard from my recently df'd brother that most of them are still in.
There is dissent in the congregations. If it was there in the late 90's, I can only imagine what it is now.