David Gerard wrote
The problem there being that many
people think an article being deleted means another article on that topic can never be created, ever.
Back to the classroom for them. '
Topic X is not one on which an encyclopedic article can ever be written' (X = my left nostril, for example) is a sufficient condition to delete. It is not a necessary condition, though in a sense if AfD were working at near 100% potential any salvageable article would be kept as a stub. If it were a necessary condition, then, yes, the 'what has changed?' argument would be quite strong.
But that's not the case, nohow.
Charles