He doesn't have it because he isn't on the level of people that use Advanced CoC
But Kid is stronger than Zoro. Yet here we are with Kid not having AdvCoC. How did that happen? All Luffy need to learn AdvCoC was to simply learn it existed. Nothing else. There was no process. There isnt even a single thing Kaido said about “You must reach level 69 of regular CoC usage to finally use AdvCoC” no… There is no such thing ever stated by any sibgle person in the entire manga… The one and ONLY thing that Luffy ever said about how he learned AdvCoC was him simply learning IT EVEN EXISTED
Kid who is stronger than Zoro and has Rrgular CoC has fought two AdvCoC users who have used it on him presumably and he has witnessed Black lightning emanating from them with his own eyes and yet he doesnt have AdvCoC
Do you see where I’m going with this?
Doflamingo can have CoC for 30 years and not have advcoc. Kid can witness AdvCoC and be stronger than Zoro and yet he doesnt have AdvCoC.
So what do we make of this? Its almost like your random ass rules about how AdvCoC should work” are not supported by the manga