Endwalker's story had me, but lost me. Ethical issues especially (spoilers)

[KizuyaKatogami]

From a certain point of view it will appear she kept it all a secret from everyone in Ancient times but as Venat said, she had gathered people she could trust during the time between Elpis and the Sundering day when WoL left back to his/her time. The issue is that we did not see her journey between Elpis to the Sundering day so it looked like she kept it a secret from everyone when she did not since she said before WoL left she went on gather allies she knows won't try to stop her plans to defeat Meteion.

That is why I believe Venat's story is badly handled because we are missing a large chunk of her story that lead to that moment and by missing that large chunk of the story people will assume many negative things about Venat similar to how people assumed alot of things about charaters we know little about since we only see the beginning and end of the journey but never the journey that lead to the end.

Are those allies presumably not just her followers that she summoned hydaelyn with? All she had to do was tell Emet and Hythlo, which we know she didn’t.

[EdwinLi]

Are those allies presumably not just her followers that she summoned hydaelyn with? All she had to do was tell Emet and Hythlo, which we know she didn’t.

Dialog from the Anamnesis Anyder cutscene:

Diplomatic Ancient One: Venat, please... Why must it be you? If I may speak plainly, I would sooner it were another... any other. You are our leader. None can take your place.
Venat: You know as well as I that but few support our cause. Far fewer than they who place their faith in Zodiark. If Hydaelyn is to stand a chance of opposing Him, I am the only one who might suffice as Her heart. Rest assured, however, I shall not vanish from this world. The form I take shall ever remain my choice.
Diplomatic Ancient One: Then I will press you no more. Only know this... you will be sorely missed. I wonder... is this how the Convocation felt about Elidibus?

This sounds to me like those closest to her were were oblivious to the sundering, so whatever she did tell them didn't seem to include the destruction of their civilization as they knew it. I doubt she'd have any followers if she had.

As I said, we are missing a very big picture of events about her journey to the end.

Due to this we easily make assumptions based on what little we know and assume a lot about a character's action.

I cannot say if all of her actions are right nor wrong because we only known about certain moments SE story writes made but never the full journey leading up to specific moments we know about.

It is after all flaws of rushed writing and only given the beginning and end of a joruney with maybe a small moment during the journey because we never see important moments that will have solidify her choices such as her choice to reveal the truth to Emet and Hythlo or not somewhere during her journey to the sundering day. Not to mention how many times this may have crossed her mind and at certain points she may have come close to do so but something happened that interrupt or resolidify her choice. After all Venat was very close friends to them and Azem but without knowing the full journey we can never be certain of the full picture that lead to her actions.