It makes sense that if a story which clearly parallels the Franklin's disappearance happens/is referenced in Discovery, it might get a mention.
Example: the crew of Discovery ponders being lost mysteriously..."we'll be one of the great mysteries of space history, like the (insert Vulcan ship here), (insert alien space probe name here), the Franklin..."
Example: the crew of Discovery ponders being lost mysteriously..."we'll be one of the great mysteries of space history, like the (insert Vulcan ship here), (insert alien space probe name here), the Franklin..."