SPOILERS FOR ENDWALKER
Diddn't know if its been long enough since then to really warrant the spoiler, but figured the subject was big enough.
Was doing the heal role quest for DT and saw an NPC "Thank the Twelve" and it made me think about something...
With the Twelve gone after the alliance raid, what happens with all of the prayers to them from others around the planet? If another world ending event were to happen on the scale of the final days/Bahamut attacking and the people of Etheris started praying to their diety for help.... would that be enough to potentially make a primal out of them?
I know we have a "New" way of summoning that is different now, but if we diddn't end up telling the realm collectively that those deitys are gone, it would just take a lot of belief in a single being and aether to summon a primal of like, Byregot for instance, yeah? Is that not what happened with Louisoix at Cartenau when he became Phoenix? Prayer for him and the hope to save us and a bunch of aether?
I doubt this would come up in the MSQ ever, but just a random thought that popped into my head when hearing someone mention that phrase.