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

[Skyborne]

For me Endwalker made Emet-Selch go from morally grey to morally good. I have nothing against Venat as a character but I don't understand why the writers expect me to think she's a hero. Her situation is not like a general begrudgingly sending his fellow soldiers to their death. It's more like a commissar sentencing entire populations to gulags because of a difference of opinion.

His motivations were so sympathetic that they had to pull mindwipes and time loops to make him retroactively 'wrong'... and even then, the motive still remains sympathetic, and he comes across as even more tragic because he took a mindwipe beam to the face. For us, and our future. Especially when you compare him to the hilariously awful peas in a pod, Hermes and Venat, who killed trillions for what is essentially a lofty philosophical pissing contest. Meanwhile, he just wanted his friends and family back, even if he also had to kill billions.