No they did not. The chronology of events is that they were invited to Join the Alliance of Lordaeron, which they did. -After- that Conflict ended, the Kingdom of Quelâthalas formally seceded from the Alliance of Lordaeron, as for that matter did Gilneas and Strom.
Where you may be getting confused is that -some- Elves, particularly those who lived in Dalaran were reluctant to sever ties, and remained part of the Alliance (a gentle form of Treason I suppose, especially when you consider who their leader was, dwelling in Dalaran as he did. Kaelâthas Sunstrider.
The High Elves as a Nation had left the Alliance after the Second War, formally. -Some- High Elves, including their Crown Prince, volunteered to retain their links and the Alliance.
Then the Scourge invasion happens, Quelâthalas and the High Elves are a neutral state at this point, Kaelâthas and his buddies are working for the Alliance of Lordaeron still. With the death of his father, Kaelâthas is Crown Prince, but he cannot rule at home and command elsewhere. He selects Ranger-Lord Lorâthemar Theron to be his Lord-Regent whilst he is absent at war. Lorâthemar to remain home and oversee the rebuilding and reclamation of Quelâthalas, leaving Kaelâthas free to carry out his perceived obligations to the Alliance of -Lordaeron-.
Bear in mind he does not change the political allegiance of his nation, Quelâthalas is a neutral state, he and his are volunteers, however by the time they place themselves under Garithosâ ill fated command, both the ones in Quelâthalas and ones with Kaelâthas have renamed themselves Blood Elves.
Yâall can check out âHigh Elfâ on Wowpedia to see all of the above, and I prefer it as a source as it actually links the sources for what it is saying, and specifically says when something is speculation, or from the RPG which is non canon.
As we all know, Garithos intentional mismanagement caused even Kaelâthas and his followers to seek better allies, and ceased helping the Alliance.
So yeah, Quelâthalas seceded from the ALliance of Lordaeron after the Second War, Kaelâthasâ volunteers after Garithosâ betrayal.
As stated above âYes he isâ Things of this nature -have- actually occurred in our real world, so it is hard to say it is unrealistic when it has happened in reality. ANyway, Blizz do specifically said that he was the leader of the volunteers after his father had taken the nation out of the Alliance.
Yep, because that was the tail end of the Second War, all of those above mentioned were part of the Alliance of Lordaeron at that point in time.
Alright, let me give you a metaphor;
The Second War was everyone in it together, the devastation was large, but ultimately was a victory for the Alliance, for Quelâthalas it was like, (not indirectly due to the methods) The Blitz in WWII. It was also longer ago, not so long that any elf alive will have forgotten it, but the timing is relevant. The High Elves go neutral, but amiably neutral, as some aid the Alliance when it comes to the Third War.
Now during this Quelâthalas takes an -almighty- kicking. Blizz are very good at blithely throwing around figures like 90% died, including their ruler. 90% is an unfathomable figure, to put it into context, if that happened in say, Britain, the population would go from 66 million, to 6.6 million. Britain is the 32nd most densely populated nation in the world, and yet if I was one of the ten percent that survived, I would be the only living Briton for at least ten to twelve miles around, and even then I would likely fine one other person, maybe two. The sheer near destruction is almost unfathomable to consider. During those times, people cling to what they had before, and that would be their new Crown Prince.
The Humans then tried to ceremonially execute him -ceremonially-. The reason I say The Humans, is that anyone who thinks that Othmar Garithos could arrest Kaelâthas and his volunteers -on his own-without a force backing him up is placing rather too much faith in the powers misguided racism gives a person!
So how does this look, to the Elves. A people they were supposedly neutral to, but had been helping, in your peopleâs darkest hour seeks to slaughter your people, and douse one of the embers of hope your beleaguered people have left, leaving you broken. With friends like that, who needs Enemies!
Things are naturally at a pretty bleak ebb in Blood Elf and Alliance relations, but that doesnât matter as much to a degree, because the Alliance of Lordaeron itself ceases to exist, and later a new Alliance is formed, this time around Stormwind.
âPerhaps the Alliance will behave this time?â The Blood Elves think, then Oh no, Dwarf Spies and Armed military incursions on Thalassian soil, carried out by Alliance 2.0
Clearly they want to finish the job the Scourge and Garithos tried to do.
This hurt is current however, not a savage invasion that you -won-, but you definitely came second in the war against the Scourge and suddenly the Alliance are against you also?
As unpalatable as it seems, the Horde are the only ones offering help.
Again, similar situations -have- happened in our world, in shorter spans of time, so whatever is possible in reality, is not too âunrealisticâ to happen in a fictional setting.
Thatâs what I said, they were part of the Alliance of Lordaeron. They have never been part of the Grand Alliance.
But that is the lore. I donât understand why people are incapable of understanding that the Blood Elves actually have huge grievance with the Alliance. Them joining it at -that- time would be what makes no sense in the Lore.
No they do not. This is not Tolkien, there is more than one fantasy genre. Elves do not âbelongâ to the Good Guys in ever setting, and WoW Elves are actually incredibly pragmatic when it comes to alliances.
No they didnât. The Elves of Quelâthalas belong exactly where the Elves of Quelâthalas think will serve their best interests, like they always have done, in WoW lore. In that, ironically they actually fit the original ethos of the Horde races in that it is Alliances of convenience or necessity
Tell Italy that in World War II, to give ârecentâ example.
Weâll never know what the Blood Elves thought of Garithos during Vanilla, because they werenât in itâŚ
Or âPlotâ as writers call it. Just because youâre posting on a Level 10 Blood Elf doesnât mean it isnât rather readily apparent you canât stand them.
In Shock news, Company performs market research, find the results and implements them to address a problem. Like, yâknow, every business does.
Or was there only a huge faction imbalance because the Alliance had Pretty Races?
Turns out there was!
Then why do they attack the natives?
(Inb4 âMeta forced plotâ So like, the starting zones then?)
Alleria is something unique, sheâs not exactly the same as the other Void Elves, as she was created completely differently. As to the High Elves and Blood Elves at Telogrus rift, we only know they are -studying- the Void. No one knows the ritual Durzaan was doing apart from Durzaan, and heâd very deadâŚ
So like every new races starting scenes then, hmm? I mean what kind of argument is that? âWeâll write some lore, but no one will ever know it because weâre not implementing the race that lore is about?â
I mean what did we know about Void Elves, before they were introduced as a race eh?