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

[Lurina]

The whole concept of “Utopia” from its original inception is that it’s a farce, that’s the way almost every single piece of media has played it to be, and the writers even connected it directly to that original concept with its naming of the main city the civilization centered around.

I feel like this fanbase has collectively absorbed the superficial detail that Thomas More's Utopia is a satire and assumed it's a satire of the concept of utopias, when that's not really the case at all.

Utopia is a satire of the early Humanist movement of 16th century European society, poking holes in the contradictions between the radical ideals it had on paper, and the structural issues it refused to challenge - such as the influence of religion on government and and the social problems caused by property ownership and the emerging proto-materialist culture of the time. The Utopia in the book isn't named "no-place" because More was arguing it was unachievable or undesirable (in fact, he was almost certainly advocating for a society like the one depicted, judging by the tone and how it mocks a bunch real countries via explicit contrast) but rather because it was so alien to renaissance-era Europe that it was beyond the scope of what most people were even willing to imagine.

His point was that to attain a perfect society where no one was treated unfairly, just about every cultural sacred cow would need to be slaughtered; money, aristocracy, self-expression, Christian morality, etc. Ironically, by positing that it's wrong for the Ancients to have social and ethical systems unlike our own through a largely emotional argument (see how the critique of their custom of voluntary death is framed wholly through Hermes' visceral discomfort, without even really trying to examine it on merit), the writing is proving his point: That we are too reactionary and defensive regarding our own customs and values to rationally envision a completely different kind of society from the ground up.