There are explanations for games that ship with downloadable content already included. There are, however, no excuses. While you may have a reason, you do not have validation, because on-disc DLC is a problem willingly created by the industry, and it doesn't have to exist in the first place. You cannot justify a problem arranged by design, no matter how much you try and pretend it's out of your hands.
This week, the Jimquisition takes on one of this generation's growing aggravations, and you won't even get charged for it.