All classified requires an Original Classification authority to deem it classified. There are very few OG classifying authorities as I understand. We are all responsible for derivative classification, which simply means carrying forward the classified markings as presented to us. In a perfect world, yes we should always be alert to challenge classification decisions. Hopelessly, endlessly clogging the system in challenges hardly seems efficient or effective (to me). At times an item is deemed classified based on compilation, meaning X plus Y together can compromise a classified item. So whereas it may not seem appropriate on face value, it may be if items are presented together in certain formats.
This is quite different from using an automated classification system and clicking on TS because you want to be on the safe side. Those annoying practices should be addressed in annual employee training (that most doze through). Computer based training…the wonder child of the mid 2000’s…obviously isn’t getting the job done.