The idea that the mortal world and the magical world are such seperate universes within one individual so as to have no contamination one way or the other is bothersome.
I think you are right, but also wrong.
I believe that you are right in the sense that, yes, it would be ludicrous to expect a mass murdering wizard to restrain himself and only use non-magic in his killing sprees, thereby avoiding sanction by the White Council. Obviously you should expect there to be contamination.
I believe that you are wrong in the sense that, no, it would be ludicrous to expect a mass murdering wizard to restrain himself and only use non-magic in his killing sprees, thereby avoiding sanction by the White Council. Obviously you should expect there to be contamination.
In other words... where have you seen evidence in the series of such a character? Where have we seen a criminally-inclined magic user that acted to harm mortals without using magic? Have we seen anyone abuse this "loophole" yet? I'm wracking my brain trying to think of someone, but I can't. I'd posit that you're exactly right, there would be contamination,
so there always is, and therefore the point you're trying to make is moot.