An empty file flipping the marker is surprising, because it means the override doesn't need content to take effect, just presence. That makes every override a live signal rather than a dormant note, so a stale one sitting in a tree changes behaviour while looking like it does nothing. Deleting it isn't the same as emptying it either, which is the distinction the post leans on. Worth checking whether a non-empty override behaves the same way or whether the marker only cares about the file existing.