You just read Wano, a 150 chapter arc filled with ex machinas and the most generic shonen writing of all time, yet you still have faith in Oda?
What Ex-Machina have you saw in Wano? Nika? That's it.
What have the Gorosei done to be put at such high pedestal despite the panicking and incompetence they showed for the past 1000+ chapters?
Look, I agree with you in some points were a lot of people think too Highly about the Admirals, but the question itself here is that lately the trend is the opposite when you're looking at the grand scheme of things, from Weevil defeating Fujitora, to Lucci beating an Admiral and so on.
Now it's HK's and the Gorosei, and those characters are absolutely featless and I don't doubt they could be as strong as CP0 considering said group is stated as "Elite".
It's just like another version of Tobiroppo and Numbers.