Moria being a Kozuki seems pretty dumb and I don´t think Oda thought much about it, but I did think of a theory I´ve seen before that the Horn people(Moria, Kaido, Yamato) could be descended from the original people of Wano, who were ancient giants. We know Oars had a ¨country of villains¨ but it doesn´t seem like it was Elbaf
It´s been implied that the frozen giants were the people who made Pluton, which is in Wano.
And we know Kaido didn´t want Yamato to trust humans, even though he didn´t seem to mind humans working for him, so I guess he specifically thought the people of Wano would be hostile to her.
But anyway, this cover story is taking forever, are we closing in one the longest one yet?