Seems like you can't read a complete sentence.
Chinjao establishes being PK is about beating the other Supreme Kings
He then singles out the Admirals and the Yonko as the biggest obstacles
They're all Supreme Kings.
Your point is basically worth nothing, we've seen Kizaru do as he pleases even with a Gorosei member suggesting otherwise, him being content with following orders doesn't mean shit when Rayleigh,Katakuri and Zoro are all the same with their captains.