'A few minutes' wasted, knowing ahead of time how she would react and answer.
I don't know why ex-JWs bother baiting JWs at the door and at their carts. We know it goes in one ear and out the other. Better to use that time/debate skills for a JW friend or family member who actually expresses a doubt or concern.
But, to each his own. If it trips your trigger, happy shooting...