Major Spoilers for all Expansions - Some general things I didn't understand

[Zero-ELEC]

Hello everyone,
There are a few things that I didn't quite understand during the story from A Realm Reborn to Endwalker, and I hope you can help me.

1. As far as I understood it, Dynamis is essentially the counterpart to Aether. Dynamis creates life and gives it form, and Aether fills that life with all its aspects, darkness, light, earth, fire and so on. Why do Primals need Aether crystals to be summoned, whereas the inhabitants of Ultima Thule are entirely composed of Dynamis?

2. Aren't the Twelve essentially Primals with extra steps?

3. When we use the Azem crystal to summon people from other dimensions, where do they come from? From the Shard Worlds or from alternative versions of the Source? Do we form them with Dynamis? How do we know it works, does it work like a job crystal?

4. Why can the Omicrons easily resurrect beings that have died? Doesn't that make death inconsequential to the storyline in FFXIV? For example: In the Aetherstream where we fought against Amon, we saw Haurchefant's soul. Why can't we encase it in a crystal, bring it to Ultima Thule, and resurrect Haurchefant there?

5. When we speak to Metrion in Ultima Thule, Hythlodaeus and Emet-Selch appear and summon a bed of Elpis flowers. Why can they do this? Why do they have consciousness, and even more importantly, why do they still have the power to create things? Shouldn't they just be projections? And why do they remember Metrions doings? Didn't it get wiped?

1. Dynamis does not create life. Dynamis is a form of matter just like aether, analogous to real world dark matter. Primals need aether because they're built off aether, as inefficient as they are intentionally. It is unclear what exactly what all the inhabitants of Ultima Thule are made of, but they have physical forms, and indeed, everything in Ultima Thule has physical forms, because of the hope that suffused the area, although it was initially because of Thancred's will. Ultima Thule works less on direct logic and more on "feel". Don't think too hard about it.

2. The Twelve are constructs created by Hydaelyn with their cores made of fragments of the souls of her collaborators. However with time, they've been changed and supercharged by the prayers of their adherents. They are primals in the way that any aether construct is a primal, i.e. being aspects of creation magics.

3. It is intentionally unclear where the people come from. It is up to your interpretation. Maybe it's summoning some of your Warrior of Light's Free Company friends, maybe it's summoning heroes from beyond the rift. You get to decide who and what you're summoning.

4. The Omicrons in Ultima Thule can create life in the same manner that Omega could create life during the Omega raid series. Their advanced technology can replicate beings using their "blueprints" as it were, like how Omega replicated Alpha based on the interdimensional records of the Chocobo protagonist from the Chocobo series. The few beings they create are either based on Meteion's recollections from the Dead Ends or Stigma-4's Dreamscape. However, besides some of the initial replication, around half of the Last Dregs' customer base are pre-existing dynamis based beings originally given shape by Thancred's will and then sustained by the hope that permeates the area. As for why we can't do that, the better question is, why would we want to?

5. Hythlodaeus and Hades are capable of creation magics as they are ancients. They were summoned "to life" from the lifestream by the supercharged Azem crystal, empowered by Hydaelyn to be able to bring back people, as shown soon after by being able to bring back the Scions. At no point does Azem crystal create projections. They remember Meteion's doings because memory alteration magics get wiped clean the moment you die, as explained by Scholarch Montichaigne.