The very fact Oda goes out of his way to explain admiral shortcoming at every turn, all the while has BM almost die 6 times between 2 arcs with no explanation, is telling enough.
1. Either every single moment where the Yonko have looked bad has no explanation, the Yonko are just scrubs,
or 2. There are reasons the Yonko look bad, but Oda doesn’t care to elaborate on them in the canon.
Either way, it really tells you exactly what Oda thinks of each group if he goes out of the way to protect the reputation of the Admirals this hard but doesn’t care to do the same for the Yonko. I think the only time where Oda ever gave an in canon explanation for a Yonko looking like shit was when he had Rayleigh state that he doubted he could beat Blackbeard after he utterly humiliated Blackbeard there. IMO it wasn’t even necessary to defend Blackbeard there, the guy has enough going for him and will have even more at EOS but what’s done is done.
Even Green Bull getting WiFi diffed didn’t age anywhere near as hard as Admiral haters thought it would as the same shit happened to the Gorosei and Imu lmfao. Oda even had Green Bull state he wanted to fight the RHP later while he made no such attempt to save the reputations of the Gorosei and Imu.