I hated Garithos, and that’s why they should keep as he was in the original game. Don’t change him, don’t censor his lines.
If Blizzard was worried about his racist views, then I would find it silly to censor him. When I originally played the game, I didn’t see his views as a representation of racism in our society as some apparently did. That said, wouldn’t it be the best way to represent racism? Representing it in a character that most hate because of it?
So if they want to show that racism is bad, they shouldn’t censor him. Garithos views and his actions are enough proof to the player that racism is bad. So if that is what they want to show, then keep him as is.