Sweetie, endwalker was about the end of the story and tying loose ends first and foremost. Why did you get the impression that the story would be mainly about the final days? I'm glad that the story touched on more than just that! Remember, they said in the fanfest and marketing materials that shadowbringers was about finally bringing an end to the garlean empire!
Imagine being disappointed that shadowbringers wasn't about that at all, instead of what it actually was about! (that's you)
Stop limiting endwalker by what the final days could have been... that's all in your heads lol. You're basically mad it wasn't what was on the marketing material while shadowbringers had the same misleading over it. (and stormblood being advertised as the ala mhigo expansion, while omitting that the far east was even a thing until the last moment).
Edit: yeah, I know you garlemald lovers think a garlemald expansion would be all about keeping garlemald's honor... Look at that slide and let sink in what the devs intended since many years ago.