Yes. Which is, effectively, a root of my complaint.
Honor ends up presented as just words; a generic invocation which either commands someone to do something “just because”, or excuses something “just because”. So WoW presents Horde honor as an excuse, which is insulting.
At its root honor should be, for something like the Horde, a code of conduct. Effectively a feedback loop morality: Act honorably and be held by the group as honorable. With the obverse consequences being fairly clear.
That way it ends up following the model of honor as restraining of action; a tempering of action. (Which would also help explain why corrupting the Orcs was a thing, have to get past that tempering.)
The Alliance also uses honor concepts, even invoking the word honor - though not as frequently as the Horde; however Alliance Honor isn’t a rhetorical club about the evils of the whole group.
The arc leaves us with little course but the idea that Saurfang needed a human prince to understand honor.
That’s what it is at the time in question. 
That’s the past for where this happened in the story.
That past, of a “horrifying sea of greenskins”, isn’t even an objective point now; it’s “perspective” from the first war, from the humans.
The very background of the Orc just isn’t that for where the story is now:
The orcs once lived as shamanic clans on the lush world of Draenor. Corrupted by Kil’jaeden, a demon lord of the Burning Legion, they invaded the world of Azeroth. Eventually able to free themselves from demonic influences, the orcs settled on Kalimdor, erecting their great capital Orgrimmar—from where they fight to find their place in the world they once came to conquer.
Chronicles doesn’t make the Orc just a murderous savage. And here we have the Corruption, which they broke free from. Which is now modified by Zovaal being in the story also.
Making the different culture and its customs, evolved in a different place, something that is always on the knife’s edge of murder and bestiality, is making it just evil. It is saying its nature is ill.
That isn’t the sell for the Horde.
Nor does it make any sense with Saurfang deciding that dueling Sylvanas was an answer.
As it was, honor was plot, I still don’t see an arc-wide resolution.
If they had gone with Mueh’zala using him at Darkshore, then, based on events he can decide Sylvanas must be stopped. That would have reinforced the manipulation cycle they’re depending on with Zovaal.
