I think most JW's have no idea what is going on in their religion. Most never open the WT (or pull it up on their iPad) until it's time for the meeting. Then they kinda "snooze" through the meetings and miss most of it. Especially true the brothers who are handling "responsibilities". They are barely in their seats.
But, most JW's don't give a ratsass about the doctrine. It's their network. Their Social Club. They just drink the Koolaid and follow the Piper.