Elidibus also confirms it, when saying that due to the actions of Lahabrea, they were able to find an Echo user with such potential.
Printable View
Hey, new to the lore thread so I may have missed some things but didn't Tataru say in 2.3? that many adventurers applied to join the Scions after hearing about your characters feats in saving Eorzea from the Garleans so they were having money problems. I doubt that all that joined (including Hoary Boulder and Coltenet) posses the Echo. The Scions were initially formed by The Path of the Twelve and The Circle of Knowing however the organisation has vastly changed from the beginning (they are no longer a secret organization and they lost many of their members) so I don't believe that it is far fetched that they would recruit strong allies even if they were not blessed with Echo or are from the Circle of Knowing.