Moenbryda died in ARR and Haurchefant died in HW, though both have been brought up repeatedly over the years. There's no reason to believe that the Ancients will never be mentioned again, especially with the popularity of the likes of Emet and Venat.
You're free to dislike them, though clearly there's plenty of people who do like them and are interested in their legacy being remembered as the story advances. Which in itself was a major plot point towards the end of Shadowbringers, as I recall.
Though I think that's likely a bit too much nuance for fly by posters with questionable takes to grasp, I suppose.
