Tridion Docs provides only two system statuses namely Drat or Release. In order to mark any object (Topic/Map/Image/Etc.) canceled/obsolete and to stop using those objects in baseline, a new system status is needed.
Introducing new system status with a restriction to use those objects in Baseline helps customers to classify and streamline the content usage. Marking a released object with a draft status, just for baseline restriction is not inline with the CMS principle.