I can explain why elves in general tends to annoy me , they are often depicted as beautiful , with lots of grace , wise , immortal or super long living , with often great civilization and on the side you have the savages dirty hot headed human .
DAO suffered from this too , when you go to the Dalish clan you get told how the pretty perfect elves were living like peaceful bunnies full of love and then the humans with disease arrived and felt like smashing everything wise and beautiful around because well that's what barbarians do. 
Of course even in DAO it sounded like a fairy tale , and the lore you could find around didn't go along with the story all that well.
First humans carrying around an anti elven immotality disease was strange , yeah it's fantasy so anything possible , but there wasn't any proof it was a thing.I mostly saw it as a metaphor for the fact human breeding with elves = human babies , so should the elves live among humans they would be threatened as a species in the long run.
Then there's Tevinter vs the ancient elves , the setting hinted ancient elves magic was far beyond Tevinter magic and Tevinter never managed to catch up.
Still we were supposed to believe Tevinter with magic defeated the elven empire which was way way better at magic.
And it's not just deafeated it's total annihilation .
It didn't make any sense to me back then , Tevinter did conquer most of Thedas , but they had huge problem in the south with the Alamarri tribes .Why would a human tribe would cause more problem than the mighty elven empire was a puzzle.
The way the story was told it relied heavily on buying the humans won because they were crude , (blood magic , being ruthless etc...) and the elves lost because well they were busy running around like headless chicken too traumatised by the horrors of war the human brought.
So yeah that was annoying , a very black and white story.I'm not blaming the Dalish for believing it , part of it is true afterall.The humans did came and beat the refugees and survivors from the elven empire into submission.
Anyway I do like the Dalish and even the ancient elves now.
The dalish are a walking tragedy , at this point their goal is to be like the ancient elves , rebuilding their empire , they think when they are worthy their gods will be back and immortality and magic will be back for them.
Except this is impossible , they are still slighly more magical than human but still closer to humans than they are to ancient elves , and there's no turning back or cure or whatever.
And I like the ancient elves mostly for the decadence , I'm not that fond of Solas because he's into the elven perfection nonsense , if you're not immortal and super magical well life ain't worth living, and people are now all dirty barbarians of course.
Nevermind the fact ancient elves in many ways were more ruthless and savages than current civilization.