I couldn't tell you about everyone, but JW teens couldn't care less these days. Other than the ones who are really pushed by their parents to pioneer, most put on a brave face for the meeting before they chat to their friends afterwards. Then they go home and act like ordinary teenagers. You just have to look at their Facebook profiles. Selfies with skin showing, and "funny" videos and pictures. If it wasn't for convention pictures you wouldn't be able to tell they're Dubs.
Then when push comes to shove and their parents want them to get more involved spiritually, they're away, never to be seen again.
The Borg are losing the youth and they know it. It's why they're suddenly acceptive of social media, have the big and flashy JW.org and are generally trying to be more modern. But they are fighting a losing battle. I think this is the beginning of the end - the youth will start dropping like flies and the rest will eventually follow. It will be a slow death and a horrible one. They are smart enough to see through the facade.