Endwalker was a great mess(SPOILERS)

[Bhearil]

Lack of consistency will always be a problem with FFXIV, you can tell they had an idea and they flipped to another one. As I said before, the more you think about everything the less sense it makes. It's like how inconsistent tempering was, during ARR it happens if the primal was around, yet during HW Cid pilot the airship during the whale thingy. Later on during SB it worked differently and we can shield others from it.

Oh, and that last bit, what I understood is that said primals were in reality just regular concepts of creation magic. Witch make the whole Ancient temper from Zodriak even more silly, like why would the ancients temper themselves?

Edit: I just forgot to mention: both twins not getting temper when metting with their grandpa during Bahamut coil raid series. Not to mention primals tempering primals... ouch.

The reason is probably the Primal´s aether ammount. Prime Zodiark had such ammount not even the Ancients could ward against it, meanwhile the rest of primals are tiny specks of aether in comparison thus easy to ward against, for beings of huge power like the Ancients aka having the Blessing of Light

When we face Zodiark not only is faction of his power, but also Fandaniel wants to crush us not tempering anyways, and when Luisoix was tempered was after he reliquished all the power he gathered, so his aether was overwritten with Bahamut's imprinting

Think on aether as water, if your own is a river, someone pouring a cube of different water wont change anything, but usually primals for normal people are akin to having a small stream being overwritten by a water inundation.

Seems Venat aether protection spell does not only affect the wearer but also an small area around them, thats why they can "shield" others from primals tempering