Originally Posted by
Mehrunes
Given Fandral's rather xenophobic attitude towards the rest of the Alliance, that'd indicate there'd be two Alliance teams. One official ambassadorial mission (and really, checking the credentials and authorization of an ambassador is diplomacy 101, if the ambassador didn't have authorization to speak in the name of the Alliance he'd be sent away) and Fandral's special ops. But both fucked with the Blood Elves.
And yes, the quests were made after the decision to make Blood Elves Horde. This is inconsequential to a lore discussion. Blizzard could have the most idiotic reasons to write any and all peace of the story, what matters in a lore topic is what they've written.
Also, in vanilla Dwarves already randomly risked war in three different Horde-controlled areas because they apparently didn't have enough space to dig stuff up back at home. So your earlier point about how super wise and diplomatic Magni was kinda flies out of the window. Which could very well apply to his diplomats.
Which was still the continuation of the Alliance of Lordaeron. Garithos was just the highest ranked remaining officer so he assumed control. It was made of the same groups and nations that are the baseline of the Grand Alliance.
When did Garrosh backstab the Blood Elves? The Blood Elves rebelled against him, not the other way around. And yes, Garithos is one of the reasons they joined the Horde. That doesn't innately indicate that what he's done is worse than the Orcs. It's still more recent and was followed by Alliance trying to fuck them over some more. Orcs aren't even the reason why the Blood Elves joined the Horde (so from that perspective they don't matter immensely one way or another), Sylvanas was. The same Sylvanas that admitted to still having a heavy dislike of the Orcs when she herself joined the Horde. The same could have been true for Blood Elves.
And neither try to gather any information, particularly from the Blood Elves themselves. While understandable for Vereesa since she carries her biases due to "they killed muh Rhonin", the same shouldn't apply to Alleria. And yet she gobbles up everything Vereesa feeds them and rather than ask Lor'themar, her friend, his story, she instantly blabbers about what her master Anduin ordered her to say.
And then most of the Orcs turned against Garrosh and dethroned him, which should be enough of a statement about them and brutality. They also know that Forsaken's primary enemy was the Scourge, who used bio-magical warfare against them in the first place and Alleria should understand the concept of fighting fire with fire because she's a purple embodiment of it. Alleria also knows the Forsaken are led by her own sister and consist of many fallen High Elves, but instead of trying to get any information whatsoever, all she apparently cares about is "hurr durr, how can she lead the Horde".