I'm really nterested in this :

Hoping to discern the origin of the Echo, you engage Titan in discussion. He confirms that the origin of your blessing is not a god that has been called to the land, but cautions against trying to summon whatever it is. The overuse of such methods, he reveals, surely invites only death and disaster.
I wonder when and why the Primals went from gods called to the land to mere aether without a real consciousness. All they are in 2.0 onwards is a reflect of their summoners's thoughts