Ditto, Stuck, I have found that with many people I talk with say they have friends or relatives who were once JW's, occasionally an active JW is mentioned.
I was in a shop a while ago looking for a present for an old JW friends Anniversary, the only normal thing left I can do for this person, and the Lady who ran the shop asked was it a birthday present, so I explained, she then said "I used to go to the Kingdom Hall", it turns out she went for a few years with her Mom until in her teens when she stopped,and her Mom left soon after.
So many that tell of Ex-witnesses ! I wonder if the estimate above is too small ! and I ask again,how come those people woke up, long before Old Thicko me ?
I take your point too, if it were the "truth" surely these relatives and others would have accepted it, thus making todays claimed mebership much higher,and those millions should only be thousands that left.