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

[Xirean]

Because in the end Gaia didn’t really have her own choice. It was us fighting for her and mitron fighting for her, there was hardly any perspective on Gaia’s own thoughts and what SHE wanted. Instead we’re led to believe after she gets her memories back, that she’d rather be with this random girl she literally met a few days/week ago over her long lost love. We effectively erased Ardbert did we not? By this logic we should have let him die normally and have his soul return to the aetherial sea to have another shot at life. Instead we rejoined with him. It’s a complicated plot. Who deserves more agency gaia or loghrif? Loghrif is certainly still in there as we see. So how do we choose who gets to live at the expense of the other? In the end, Mitron was just fulfilling the promise both him and Loghrif made.

Mitron wasn't pulling out suppressed memories. He was placing his own onto her soul. This is a very similar thing that Emet and other Ascians have been doing with the memory crystals. If Emet wanted to, he could have used the Azem crystal on us and it probably would have worked to effectively overwrite the WoL with Azem. Mitron was trying to pull away at Gaia her entire life as she mentions memory problems even in her childhood. He's basically a parasite to her. As for the WoL fighting for Gaia. She was a bit stuck by Mitron at the time. Once we get them detached she goes back to being herself. Again I ask why that is confusing. Gaia is NOT Loghrif. She is her own person that some other guy she has never met was trying to replace with a dead person. If Gaia chose to be Loghrif then that is her choice. But she did not choose to be Loghrif. She held onto who she was despite outside influence trying to force her into something else.

Ardbert was dead and unable to return to the aetherial sea. I would have loved for him to find peace and return but that didn't happen. For whatever unexplained reason (I think it was mommy crystal) he was stuck as a ghost. If he chose not to rejoin with us, then that would be fine. That's his choice. If we could get him out of us and let him pass on, I'd be fine with that. I didn't want him to rejoin with us because that effectively erases him and partially overwrites the WoL with bits of Ardbert. I don't know where his consciousness is and because he hasn't spoken up since the Seto scene I can only assume that his mind is merged with the WoL. That's not really a happy thing in my eyes either. But it's what happened. The WoL would have died without his intervention and he chose to intervene.