To be fair, one of the common basis of the 40k empire is "So you just killed a zillion of our troops? Including a bunch of our supposedly super rare elites that we invested multiple worlds worth of resources to create? Like we care, we have plenty more from where those came from!"
Emprah:"Vulkan, Horus is being an heretic and blaspheming against my totally-not-a-religion. Go deal with that."
Vulkan:"Ups, I died."
Vulkan dying while doing literally nothing is pretty much the story of his life(s) too.