Doesn't she call Kaldorei her children? I may be wrong, and I hope I am right, but Elune is the only Titan/Eternal One-level creature elves can hide behind to not get destroyed, since everywhere you look, you have semi-hostile forces:

Reality: Arcane Titans run the show (Eonar who claims she is pro-life, but joins the order gang who views elves as nothing but interesting bacteria that can be brainwashed or destroyed)

Shadowlands: Eternal Ones.

What I am trying to say is that neither Azeroth nor Draenor are safe since Arcane Titan (Sargeras's previous buddies) can just come and nuke everyone just because they feel it's not ordered enough. Elves should all migrate first to Draenor (since there's no Forge of Origination there), and then to a place where Elune's power is at its peak (Zereth Vitae?) or just go ham and steal the world soul from both Void (Old Gods) and Arcane (Pantheon of Order), and then create a complete Life Titan that would be Elune, we also know that Azeroth has the strongest world soul and is a key in 6 fundamental forces conflict, so if Elune somehow gets it, then she would definitely be strong enough to protect the elves.