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

[TaleraRistain]

And this is the weird thing. The Ancients didn’t stop striving to do better. They got essentially detoured, but it’s as Hythlodaeus says. After all was said and done they planned to go back to their duties of being the stewards of the star and bettering it. So i’m curious what the message with them is.

But they did stop striving to do better. What are their metrics for what is good for the star? They were going to write off the serpent because it couldn't fly. Because it was not as it was planned to be. But sometimes the most worthwhile innovations and leaps forward come from accidents.

Then there's the situation with the creations that were killing other creations. They decided based on their own preset ideas of what was right that something like that wouldn't be of use to the star. But they didn't consider that may there was something that sort of danger could teach other creatures. We shouldn't be in conflict all the time, but we can grow from it.

They didn't show indication they could think outside the box like this. And so they stopped progressing as a species.

Also....why does everything have to have a use? Why doesn't something useless deserve to also exist?