It's completely alien because it's complete BS. Contradictions are not logical by default. They are a lack of internal logic and consistency in the story. And retcons are never justified. It's perfectly possible to achieve depth without shitting the bed with how you treat established story. And what @
FelPlague said isn't even correct. When Chronicle described the Spirit Healers it referred to them as Val'kyr. In present tense. Not "former Val'kyr" or anything of the kind. Which has been already pointed out even before FelPlague made their reply, let alone before you made yours. If you want to talk about depth or context, at least know what the topic you want to portray as deep and contextual
even is instead of instantly rushing to the defense of Blizzard kami-sama. Particularly in a situation where Blizzard kami-sama can't even keep their story straight on the topic in two back-to-back interviews.