Whether or not Kaido is a fraud, it's undeniable Oda created a clear distinction b/w WSC and the other Worlds Strongest titles which is apparent form the way these title holders are introduced. However, I don't think the reasons you're using to imply he's not truly the strongest necessarily work against him.
His 7 defeats, for example, were never specified to be from one on one or that they happened recently. Assuming someone defeated him in one on one that too recently is more of head-canon than assuming his defeats happened in the past or that he was gangbanged. I mean, People of OP, which includes someone of the well informed pirates, wouldn't buy the whole WSC shit if someone defeated Kaido in a one on one recently. And no, immortality doesn't earn you worlds strongest titles. That doesn't even make any sense.
His 7 defeats, for example, were never specified to be from one on one or that they happened recently. Assuming someone defeated him in one on one that too recently is more of head-canon than assuming his defeats happened in the past or that he was gangbanged. I mean, People of OP, which includes someone of the well informed pirates, wouldn't buy the whole WSC shit if someone defeated Kaido in a one on one recently. And no, immortality doesn't earn you worlds strongest titles. That doesn't even make any sense.


Damage control