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

[PawPaw]

She mentioned it protected from aetheric corruption, but I suspect as with many things, it was synergistic in nature. Whatever it was, it taxed her to preserve it as a primal, and she could pump her power into it, so while it may have been in its basic form a "traveller's ward", it had all the trappings of a primal blessing as well. I think they were just using it as a hook so that she could sense that the WoL was a future traveller and were out of ideas of what else to use.

Arenvald also has the Echo, and it protects him as well, such that he can join in on primal fighting, including against Lakshmi.

Yeah it's just the phrasing and inconsistency that got my hackles up. This second option is straight up disregarding everything we know about the Echo and suggesting that it's not what keeps us safe at all, as she agrees that if primals enthrall by corrupting aether, then it must be her ward that's protecting us. Suddenly it's all thanks to Venat? Pfft.