Thanks @riking! Just tried that and it worked! Unfortunately, I overlooked the fact that About this Category pages were owned by the user, but it was easy enough to disable wiki via the UI for the 10 or so category topics.
Thanks @riking! Just tried that and it worked! Unfortunately, I overlooked the fact that About this Category pages were owned by the user, but it was easy enough to disable wiki via the UI for the 10 or so category topics.