It’s particularly weird because Darnassus was supposed to have been built after the Third War, yet some of the buildings there use Kaldorei Empire architecture.
That said, at this point there’s no pleasing everyone.
Some night elf players were content with what they got. Some want the story to acknowledge that the Horde has absolutely definitely withdrawn from all night elf territories they had occupied. Some want Orgrimmar to burn (which won’t happen for gameplay reasons). Some want a new Darnassus-sized capital city back in Kalimdor. Some want the night elves to regain their immortality and establish a New Kaldorei Empire. And some would be satisfied with nothing short of Blizzard delivering an apology to night elf players and resetting lore to the end of Legion, or Wrath, or WC3, depending on the point after which that particular player believes the night elf story was ruined forever.
Personally, I’ll take it. After years of appalling lore developments, Blizzard has finally thrown us a meaty bone that can result in interesting RP. If you expect too much from Blizzard, you’ll inevitably be disappointed, and if you ask for more lore developments, you risk invoking the monkey’s paw. I think it’s best to accept that this is probably the best we’re getting, and the best Blizzard can do given all the complex circumstances.