This isn't real life so I wish people would stop using that as examples for an fantasy game made up of imaginary people, places, and things.
I don't know why you have a hard-on to make Auric seemingly Horde but given that in BFA there's an Alliance Island Expedition team named Auric's Angels it's clear he's still an Alliance member. It's kind of like the Horde folks who wanted Calia to be the new leader of Forsaken.
Not just that but also I feel like anything in TBC areas Blizzard are trying to never touch again.