Who are we to question how someone chooses to roleplay their character? Arthor's coice of role is suited to his choice of speech.
At the end of the day Avalon is about creating a role and living it. No one complained when Shaitan chose evil and played the embodiment of it.
erm. actually loads of people complained, but the fact of the matter is he was roleplaying perfectly.
Written by my hand on the 23rd of Agamnion, in the year 975.