It's simply another form of discrimination against the dunmer...let's face it, if you were a Nord, would you p*ss off the greybeards?
Good pick though, I'd probably suggest it's because different people worked on different parts...lucky for everyone else that Australians didn't do the naming or voice over dialogues:
"Arrrr...G'day mate...you ave done us a great service, cobber...I award youse with the title of Thane...chicks will love ya, and the pubs will give ya free ale! Cracker, eh? You's just gotta talk to me mate the steward here, and e'll set ya's up with a nice little digs in town, for a fair price in coin though, eh...can't have youse ripping me off. Oi, and 'ere's a bl**dy good axe from me own private stash...you carry that round and none of me cops will f*** with ya. Righto? Good stuff, bonza work....Oh, and you can 'av this shiela Lydia...she's a bit of a whiner, but not too crook on the eye and she swings a mean bat in a stoush. Onya matey..."