Considering that both contenders for the Throne at the time of Oryx’s death are female.... going to give a no to that one chief. It’s a general statement. We only know of one Taken King who has utilised echoes. Oryx. But this statement from Osiris does give me hope that Bungie will utilise Echoes to give Savathûn a presence in future, which would be nice. Give us dialogue from the Witch-Queen taunting us as we attempt to thwart her schemes.