There /is/ a code in everything Hades says, that is the thing. And the recreation of Amaurot can be understood as his voice—which is genius considering by this point in ShB the Scions would have not been inclined to listen to /him/ as the person they consider the 'evil Ascian' and the enemy to vanquish. Alphinaud does mention "feeling [Hades's] voice echoing through the place—he would have his story known". Y'shtola comes to the conclusion of Hades's perception of the sundered as children—naive, but /alive/—only a whole expansion later with the context and contrast of the real Ancients' perception. So who is to say there is not so much more in there hidden beneath layers of context, keys that knowledge grant and allow true understanding? Not unlike having the solution to a cipher.