Doesn’t matter, it’s pretty obvious that the ability will be expanded upon anyway because he’s having a fight against Big Mom right now that seems like it will revolve heavily around Devil Fruit powers. Even without this SBS I knew that this would be the fight where his powers are explained in more detail and used in different ways.
Also didn’t Oda basically say something like, “I’ll have to write something about it.”? Sounds to me like that means his power will get a good explanation soon