This is my first post on this website, so let's see how it goes. (Also some 9.2 spoilers included I guess)
I've had huge issues with how the Night Elves were treated in BfA and Shadowlands. When the Night Elves were pretty much wiped out in BfA and had their zones either taken or destroyed by the Horde or Sylvanas, we were promised that we’d get a resolution for Teldrassil in Shadowlands because we pretty much got ignored for the entirety of BfA after that.
During Blizzcon, we found out that the Night Elf Souls were in the maw the entire time. A terrible fate after being victims of genocide, but Blizzard would surely let us free them? Right? That’s what some people assumed (and I hoped for) during beta, but that’s not what happened.
Instead, the Night Elf Souls were mostly obliterated after we freed a very small fraction of them (We freed 100 when several thousands died).
Then Tyrande finally had the chance to achieve justice for Teldrassil… but Elune decided that the victims must not pursue justice and took the powers away from Tyrande. Sylvanas won the fight. Yea… I wonder where that “victims mustn’t pursue justice” story came from...
The writers then made Tyrande choose between renewal and renewal, and renewal and justice are apparently mutually exclusive so Tyrande had to forgive Sylvanas and the Night Elves didn’t get any renewal.
Sylvanas is now allowed to search for Nathanos in the maw after, getting everything she ever wanted while the Night Elf Souls are obliterated in the maw once and for all.
The Horde is also still occupying party Night Elf lands and actively killing them in Ashenvale. Furthermore, the Night Elves’ are mentioned to be so few in numbers that they basically can’t do anything on Azeroth anymore. They can’t even guard their zones anymore so that the Horde can just freely walk around in it and preach about how the Night Elves are far too few to even do anything. (Also stated in an interview that they are nearly wiped out).
The only hope for the Night Elves was to get actual renewal (that we were promised!) and have the souls of their people rescued from the maw and revived, but instead Blizzard decided to have the Night Elf Souls obliterated in the maw...
The Night Elves’ Goddess forced her children to forgive those that killed them, tortured them, and obliterated their souls.
And that’s the resolution for Teldrassil. The end of the Night Elves, that what was promised to make up for BfA only doubled down on the misery of the Night Elves and ensured that there is no way that they can ever recover. In Exploring Kalimdor it is also mentioned that the Night Elves can never heal.
I have no reason to believe that the writing team doesn't have a personal vendetta against the Night Elves at this point...