Major plot hole with Heavensward ending (Spoilers, duh)

[Timat]

Not to Hijack this but one thing I dont understand is this:

I never really got the humans being conduits for primals thing.

So follow me here

Primals are beings that are created out of many many prayers of people/beastmen/dragons/etc. that then react to a large quantity of ather crystals which then create the manefestation of said primal.

So people like Shiva and the Archbishop.....how again can then use their own bodies as vessals? Do they take the place of crystals in that equation? So intsead of Prayers + Ather Crystals = Primal

its

Prayers + Lots of ather (i.e. dragon eye) + Body = Primal?

ALSO

How does that white auracite work again? I know you trap and Acian soul in it and then break it...but WHY does it work? What makes that different than just kills the physical body host? (I know this is pre heavensward stuff but I forget and cant find the explainations on the web)

[Samcaesar]

White Auracite, from my understand, is just really good short term storage device for Aether, but it doesn't hold it for long. Think of it like a battery that you can fill up with a ton of electricity, but it only holds the charge for a small amount of time. It works by containing the Ascian in their pure Aetheric form, this allows for the Ascian to keep trapped (Unable to go back to where ever ascians hide away to regenerate) long enough for a massive burst of aether to basically whether down what would be an Ascian into just small aether chunks that have nothing to do with the previous Ascian. For an analogy, think of a rock. Now imagine that rock (The Ascians soul) is blasted with high pressured water (The massive aether burst) to whether it down til it just begins minute grains of sand (Aether). The rock is unable to reform and it's now just a bunch of sand.

[Kauthryn]

Not to Hijack this but one thing I dont understand is this:

I never really got the humans being conduits for primals thing.

We don't really know the missing element, but remember that Iceheart wasn't actually Shiva.

[Berethos]

Not to Hijack this but one thing I dont understand is this:

I never really got the humans being conduits for primals thing.

It's essentially the same as when Titan or Ifrit form due to the beliefs of a group of followers, except that it coalesces around a focal point - in this case Ysale or the Archbishop. Remember as well, in the case of becoming Shiva, crystals were still used...actually in all of her transformations (from the trial fight, being resummoned in the extreme version, and the times we see it in the story). The other Primals take on the forms, attributes, and attitudes ascribed to them by those who believe in and worship them...we see this from Ifrit all the way to Bismarck (and especially ones like Bismarck or Good King Moggle Mog, whose Primal version is different than the original legend/myth and is based on current desires).

For Ysale and the Archbishop, they are (I believe) the strongest source of their particular belief and act as the focal point as a result.

Which seems to suggest that including a body doesn't means crystals don't have to be used (they are, after all, just a large source of aether). Instead, having someone become a vessel for that Primal just means that version of the Primal will be influenced most heavily by that person's beliefs (again, seen most potently through the example of Ysale).