There are a lot of stories that they simply don't cover, either because it doesn't fit their world view, or because they're literally innocent of any knowledge that the story even exists, or because they are a dying organization, short-staffed, and thus can't cover stuff like they did before."
There are numerous narratives that fall outside their scope, either because they don't fit their perspective, or because the organization lacks knowledge about the story's existence, or due to dwindling resources and personnel constraints.