Limsa Lominsa oathbreakers?

[FJerome]

Difference:
Primals consume aether. Nothing else consumes, burns it, things are made of it, but not consumed.
The aether used by crystals in crafting eventually returns to the land as the crafted item decays with time. Aether consumed by primals is gone, forever.

Aether is not an infinite resource, much like petrol

Unless it's stated otherwise in canon the aether returning to the land with the decay of the item doesn't seem like that's what's happening - if a synthesis fails the crystal shards are always consumed, even in cases when the other crafting materials survive for reuse.