People have been saying 10 long before Blackbeard’s 10 commanders were a thing. Same way people were saying 13 long before imu’s top 13 were a thing
Don’t understand the point of acting as if either is impossible and never gonna happen when even now Luffy is asking people to join his crew. Luffy getting 10 or even 13 doesn’t mean they all have to get fights each arc and never has
Oda didn’t consider him a full on member during fmi. Which is why we had to wait for wci for him to officially join and even then we had to wait again till onigashima for him to return. Oda not even putting him on crew color spreads pre onigashima