If I understand correctly1 what it should do, "incomplete" should mean that the "has a wikidata tag and at least one logo" condition was not met. IOW, that the entry lacks either the wikidata, or a logo, or both.
However, for country HR fast foods, it lists three entries (ikeabistro-e746e6, ikearestaurant-310c78, and oakberryacaibowls-5bb50d), all of which have both brand:wikidata and at least one logo.
Is that a bug, or my misunderstanding of what "incomplete" checkbox should do?