If so, what had gone on with this tribe that made it so inconsequential?
fpr one thing (in the bible) that tribe opted out of the land partition and took up territory in the North, and kept idos to centralize worship away from Jerusalem in the south. Somebody had to leave to make room for Joseph's double portion. His double portion is payback for his brothers ousting him. so justice.
British Israel taught that Dan later went even further north and founded the city of Danzig on the baltic.