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

[Rulakir]

If only someone had dropped a gaming console in that world. They'd soon find themselves with too little time.

Yeah, it was annoying that "perfection" basically ended up meaning bored and/or disillusioned. My mother used to say boredom is a choice and she could always find things to do. I couldn't help but think of that with a few of the 'doomed' civilizations.

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.

The message is sundered > unsundered. EW seemed intent on undermining the Ancients in every possible way by implying they were beyond saving and that dynamis somehow makes the sundered superior (even though as far as I'm concerned that case was never made). It's unfortunate the most interesting and compelling arcs for two expansions now have been from a past civilization rather than anything current.