I don't see a huge exodus of young people. Believe or not the young jw's are having loads of fun. Many are world travellers (under the guise of going where the need is great). Service is a joke. I see pictures of groups of these kids standing with their carts and having a great socialization with each other.
When I was growing up , there was a lot of the young population that left or got disfellowshipped, but I have not seen one young person being disfellowshipped . At least not in my area.