I kind of understand the "Never made the real commitment" part, but isn't learning the "Truth" for 15 to 20 years, and going out into the "world" as opposed to committing,... the same as choosing to NOT accept Jehover's (aka WTS) ways and be with the brothers and sisters in union?
Why is the shunning treated different? Is it because, there's always hope by the parents, that they will come around?, etc.
What's your experiences? Is there something scriptural here?