Given that it is well established both in the writings of the Radbaz on this matter and the oral traditions of Ethiopian Jews themselves, that it was a common occurrence for Christians from the surrounding areas to be converted by the Ethiopian community. Why did Maran Ovadia Yosef pasken so decisively that the Ethiopians are complete Jews if there is a likelihood of the average Ethiopian Jew being descended from at least one convert?
*And a note so this does not get removed: The question I posed previously on this topic is not exactly analogous, as I asked for why he had an implicit assumption that they were Jewish in the first place. Where as here I am asking about a detail of his psak as opposed to his psak as a whole.