It's even more annoying because Blizzard keeps flip-flopping about the Burning. There's some sources (like the latest cinematic) that display it as something she did confidently, and in some, like the short story afaik and the original cinematic, it's something of an in-the-moment decision. I mean, the Horde version, the Alliance version and the two short stories all have drastically different character reactions. It's bonkers.