Which has been the point Iâve held to the entire time, it would be completely abnormal for any ruler to encourage their subjects to actively work against them.
By the time that the Invasion of Quelâthalas occurs, there would have been a High Elf presence in Dalaran for ~2,000 years â and while many of these people felt some obligation of respect towards Quelâthalas, evidenced by the fact that they answered Kaelâs call to war, many others felt no such obligation (having become thoroughly divested from Quelâthalas, adopting Dalaran as theirs).
Oh come on, going by recently added races I keep hearing that Vulpera are very popular and know what they appeal to. I could easily see a anthropomorphic bunny race being added to Alliance just as effective than yet another elf race.
It is very muddled honestly, but yeah SCs actions during the purge and the void elves joining the alliance probably makes them traitors in the eyes of Lorâthemar. Other groups have kept more to themselves mostly, so maybe are viewed more favorably.