Thing about that, though, is that she says it in quotes. People do that in writing to signify a double-meaning. when she says (paraphrasing) "Let me know if any Horde prisoners need 'purifying'" she means death - perhaps torture. Lightforged feel that the Light and being Lightforged is pure, therefore, there wouldn't be a need to add quotation marks around the word "purifying" at all. For her, from her perspective, it would just be a statement in that case. In this case, it has another meaning.
So, no, not the same as AU Draenei at all.