Jehovah Witness don't know or care about such details. I too have brought this up to my mother, and not surprisingly, she didn't know about it or what it meant. Then, again not surprisingly, once i explained it to her and noted that it was a ridiculous belief, she said it wasn't important.
Their minds are so focused on the TEST-REWARD concept that everything else seems expendable. In their minds, if they can stay "IN" the Org, they will get a place in paradise, and that is the goal. I feel sorry for my mother as i do for all the others, who are captives of such a delusional concept, but i've come to grips with the fact that in order to see the whole picture about the Org, you need to have an assertive mind and have good thinking skills, and the fact is that many Jdubbs, especially the older and less educated ones, simply don't have that.