Well, B, as Dorothy Parker said, you can take a whore to culture, but you can't make her think.
It's an opportunity to become a true adult, but I know former JW's who are now Mormons, and to me, that's not a huge wakeup.
If you define adulthood as taking responsibility for your words and actions, many JW's go from being victims of the worls and of Satan, to being victims of the WTS. Getting past victimhood seems to be a good yardstick of adulthood.