Lolda writing
It makes about zero sense for there to be random citizens that are just that strong who exist in the world, if they were former notorious pirates or something then it could be understandable, but we're to assume that they're random citizens that maybe practiced martial arts in a dojo or something ended up being comparable to C3/Yonko, complete bullshit.
Also, people saying Kaido/BM are an example have no idea what they're talking about, Kaido and Big Mom were fodder comparatively when the Marines tried to get them, Fujitora/Ryokugyu are just two random dudes who are top ten in the verse for no reason when the Marines turned them into Admirals.