Not quite. My claim is about what form this recontextualization takes. Your position, correct me if I'm wrong, is that Saurfang views it as not being his place to intervene because it was single combat with the broader implication that he was now doubting the rectitude of the war. I disagree, since the story heavily emphasizes the personal element of his decision to spare Malf. That he is shocked with himself that he automatically backstabbed someone, whether he was right to kill him and so forth. He doesn't consider the broader war in any real sense until after the Burning, and doesn't commit in some way until he's in the stockades. I'm saying that there are separate character beats involved rather than his decision to spare Malf being part of his revelation about the nature of the war. After all, as soon as sparing Malf is out of his hands, he goes right back into defending the war and looking forward to continuing it, up until the Burning.
I'm dubious on this count, for a few reasons. The first is that from a cosmic sense I don't really buy that depopulating and raising one city disrupts the balance in the eyes of entities like Bwonsamdi, to whom you promise a small loan of a million unwilling souls pretty casually. Or especially the Lich King, who's Scourge is composed in large part of the much bigger state of Lordaeron. Given that she has the knaifu, I think that whether knowingly or not, Sylvanas is being nudged towards a broader plan.No one else knows that Sylvanas plans a number of genocides in her campaign, with the long-term aim to set herself up as unassailable. This is also presumably the threat to the "balance" that Bwonsamdi and the Lich King are referring to, something that would push Azeroth more towards Death in the Life/Death balance or cycle of some kind.
The second reason is because Sylvanas doesn't really see this as something to conceal from anyone but Saurfang. She muses in her internal monologue that a portion of the reason she's going after Stormwind - and that she thinks the Horde won't begrudge her the dead within, is because they too are hungry for war. On top of this, we know that she can't be all that into it, because Nathanos, her number 2 guy, considers a defeat of the Kul Tiran fleet to be a way to end the war on their terms during the War Campaign, implying that a settlement that leaves the Horde in power is fine as well. This is reinforced by how we know from BTS that Sylvanas wouldn't have started the war if Varian were still in charge.
Finally, and a bit aside from that, whether she was concealing Stormwind as her goal or not, or whether that's really her end point or not, that still doesn't change that it was a major mistake to conceal that killing Malfurion was a victory condition in the War of Thorns. I don't think Saurfang would have been that torn up about it if he knew he was an actual target and it wasn't just a bonus, and she hadn't hidden "a wound that never healed" as her objective. It's obfuscation for the sake of drama, with very sparse in-story reasoning.
The reason I have my position on what they want us to discuss is that the most objectionable elements of Saurfang and Baine's behaviour - their dereliction of duty towards their own races and their aiding of enemies to the detriment of the Horde aren't brought up. Those who do take issue with them in-story have problems with their disloyalty, but Geya'rah certainly doesn't give a shit that Baine killed a number of sailors, neither do Mayla or Rokhan. They discuss his intentions, but not the factual result and the good thereof.The Blood Oath specifically strikes me as a dangerous piece of legalism within the Horde, as it binds subjects to both an enlightened ruler and an abject tyrant without any kind of discernment. Perhaps it is time for the Horde to review its own hierarchical structures and enact safeguards against the unchecked power of an unworthy Warchief (something that probably should've happened after the Garrosh fiasco).
As for reform within the Horde past that, I maintain that Sylvanas is a very poor character to be having this conversation through, and in fact, so is Saurfang. Sylvanas has barely any interest in the institutions and it's pretty much a definite that she doesn't buy into what she's selling, so defeating her isn't really rebuffing the positions she pretends to have. Similarly, Saurfang isn't taking issue with Sylvanas because of the institution, his views are explicitly regressive - he wants to revert the Horde to its Thrall-era incarnation, which still had the Warchief as supreme authority, the Warchief just happened to be a nicer dude. The Garrosh story, whatever its myriad issues, was much better suited for this, because the conflict between him and Vol'jin/Thrall were about ideals and institutions. By the end of that nothing changed institutionally either, mind, but still.