I think I understand what traditional means, and I can see why you wouldn't want to use carbon fiber bows because they aren't traditional.
What I don't understand is the remark that carbon fiber bows can be used for modern music but not for traditional repertoire because they would lack focus, articulation and quality. If carbon fiber bows lack these qualities, I don't understand why they can be used for modern music. Are focus, articulation and quality less important for modern music in your opinion?