Blizzard characterization of the various nations have been always a hit and miss (or often very basic) but the Elves have one, shall we say, hat (beyond acting like the cast of Zoolander, but dumber) is colossal arrogance, except to a degree the Night Elves.
Simply say, could Sylvanas jealous/envious of Azshara ? Who is beloved by her people without having to essentially lobotomize them.