What's the point with that quite lackluster story in Endwalker?

[Lauront]

It is written from such a perspective but aether is something measurable via various devices. And to add to this, if the ancients in Ktisis Hyperboreia are not using aether for their LBs (which are accompanied by dialogue, with Emet referring to aether), and neither is Elidibus in his WOL-primal form, where he ramps it up a notch to LB4, does that imply through such mechanisms they are wielding dynamis? Or is it aether? Obviously the story doesn't say, and in both cases we have confounding factors, i.e. the suppression field in KH (which would then constitute a possible workaround?), and Elidibus taking on a primal form, which draws on the power of prayer; while that has an aetheric association, it is also said to be correlated with dynamis according to the story.