Sengoku is a confirmed CoC user, so slander him as much as you want, he proves the point that Oda would easily write CoC users who have no problem serving the WG lol. Harald is the same, a CoC user who degraded himself to do what he thought was right.
Now keep in mind that most Admirals take pride in their rank and status as Marines and don’t consider it “degrading” to have people in the chain of the WG higher than them lol. Most Admirals don’t view their rank as “self-degrading”, so the already incorrect argument that Oda would never write a self-degrading CoC user doesn’t really apply to the Admirals anyway since most of them have pride in that rank. Lol
I think a much more consistent pattern is that CoC users only bend their knee other CoC users.
Yes, Harald and his cuckery partly broke even this basic rule by licking Sommers' boots. I don't remember if he knew of Imu's existence at this point, but Garling would do here as well. Ultimately he bent the knee to one or the other CoC user.
I think oda only gave Sengoku CoC and only
on paper just as a backup in case he decides to give one or the other admiral CoC. Or because he would've broken the rule with Garp otherwise. But then, Garp doesn't follow orders anyway. So who knows. Whatever.
Let's see those Vivi/bilbo cheeks. They must be thick considering imu gooning for centuries