Oda doesn't care about what you think dude. He care about his characters. No crybaby is receiving CoC. Forget that.
CoC = Color of Conquerors. You can't conqueror shit while crying.
Next what? Vivi, Rebecca, Shirahoshi all getting CoC? Please dude...
Look how imposing all CoC users are. Luffy, Zoro, Katakuri, Hancock, Garp, Yonkos, Chinjao... Coby doesn't fit here.