Portrayal is far more important than feats, feats are subjective, statements, especially ones from the author himself, aren't.
No, Killer doesn't say "Our enemy is
said to be the strongest", he says "Our enemy is the strongest pirate in the world", and Kidd concurs with him.
And it isn't the only
clear statement of Kaido being called the strongest without the "known as"
That's just your headcanon, Killer states Kaido is the strongest means he is, especially when backed up by the mountain of other evidence.
So? We know he fought Shanks on the way to Marineford, and still Kaido is considered and considers himself to be the strongest.
No Luffy didn't surpass him, he beat him in a battle of attrition after Kaido went through several gauntlets.
Which again, is just one stat, and nobody has knocked out G5 in one hit, nor are they ever going to.
Lmfao no, current Luffy at best extreme diffs Wano Luffy, the only difference is that Luffy can use partial G4, which doesn't matter at all in a battle of G5 vs G5.
We already saw Luffy leave G5 without turning into an old man in Wano.
Law isn't Luffy.
Law isn't Luffy.
So just more endless headcanon, I go by what we're told and shown, not your fanfics.
Extreme diffs his Wano version at best, and still he's beneath Kaido.
Kaido is called the strongest many, many times bro, your headcanon Shonen trope arguments aren't removing that