@RafikiIsTheBest my DH's parent is a JW, so I can answers some of your questions in case the OP doesn't come back.
I believe that JW's get 'initiated' (for want of a better word) at 14. After this, they are a fully fledged member, so to speak.
My DH didn't do the ceremony, whereas his sister did. She also managed to convert her husband and when they both had affairs, her DH was forgiven but SIL disfellowshipped which meant that none of the other JW's could acknowledge her (including her parent who still pretends she doesn't exist).
Because DH didn't get initiated, the parent still thinks it ok to talk to him, despite anything he might have done, although the parent has never been fully accepted within the JW's because they've never managed to convert all the family.
With regards to the close community, this is very calculated as it means their whole lives revolve around being a Witness and you'll find it very hard to extract yourself.
Anyone who thinks this isn't a cult is fooling themselves.