People, like the alluded to, don’t care for an actual conversation. I did the work and brought pictures.
https://i.imgur.com/1FYab6n.jpg
Nobody really cared that this is in the Draenei-design for an older weapon, with the front of the clothing having those Naaru designs. Doesn’t help either that the color is a perfect match for a Draenei-based weapon on top of being a priest set. And yes, the weapon drops from the wastelands on Argus. It can’t get more specific than this, there is no need for more lore.
You can also find a whole topic about this made by me here: