Au Ra scale options?

[Callinon]

I cannot figure out where in the lore books the voidsent thing is stated. I've looked over both several times unless it's like, a throwaway remark in a somewhat unrelated spot?? Now I'm gonna have to go lookin again...

I think I remember it being tossed out in like a fanfest or live letter prior to Heavensward launching. Where Yoshi P or someone else mentions that Au'ra are more like demons than dragons. I think maybe in response to a question like "what are all these dragon people doing in the city that hates dragons" or something close.