You won't want an unreality threatening the very fabric of time and space.
I'm pretty sure if you have a personified video game antagonist, despite how they plea, if he can cause a massive distortion that shatters the balance of light and darkness I'm pretty sure I'd be doing everything as the main protagonist to kick his teeth in. Disregarding any type of selective-discrimination, naturally when you put a delusional sentiment of "Justice" against "Injustice" you have the classic good guy v. bad guy show down.
If you remember, I believe Saix didn't make a good case about emotions either. He was the perfect personificaiton of a 'non-existent being'. Treating Sora like a puppet, goading him to their cause which was inevitable even without him mentioning their grand scheme (part of it anyway). Sora was wrapped around DiZ's vengence and was used for DiZ's intentions, not ENTIRELY because he felt it was right himself. He actually shed remorse for Axel, even if he forgot him in CoM, so theres a massive hole in the argument with that alone.
No, he's not racist, more like he was being controlled without realizing it.
DiZ: You bastards are going to for this, I'm sending the keyblader to eradicate you!
Organization XIII: OSHYT!!! -after loosing all the traitors but Axel-
Something like that^