People have a right to be JWs, it's a dumb religion that can kill you, but nevertheless, a person can freely choose to be a member and willingly follow the WT dogma. That said, if they know where you stand, as the "answer man" on JW stupidity, then you can let them carry on in lala land with a clear conscience. I would give them a jab every so often, just so they can't come back on you later and cry, "you should have warned me- I wasted my whole life in the KH!"
Further, the WT has proscribed the sort of people, discussions and information which JWs know is anathema to their ideas of true worship. You may have been added to the list. IMO, the large numbers of faders I see here indicates that many people find it difficult to just walk away from the KH. Gumby comes to mind as one who went back to the KH, rather than accept that his family didn't want to leave the KH, so he faced a choice - go it alone or go back to being under WT domination. You have to have a certain mental disposition to pull that off--