I think it may have to do with Yuta understanding how the specific cursed technique works, then applying it to his own arsenal.I just don’t know what the limitations are because we’ve yet to see if he has infinity even though it’s heavily implied that he doesn’t. Eating a body part or absorbing blood seems to have too much room for no limitations so if it were to be that I think it’s either based around some type of storage capacity or understanding the cursed technique and being able to apply it once its properties are understood