User blog comment:Ghmorello/Chapter 925: The King And Queen Of Thanksgiving/@comment-7614831-20181124181523/@comment-2600:1702:3C50:A6E0:2159:1940:9692:B43B-20181128153315

Useless is a relative term. Even abilities that are not meant to be direct fighting abilities can be useful in other ways or in a fight. With this fruit as long as the user remains silent they cannot be detected easily unless someone has observation haki. I don't see how fighting abilities are the measure of one's full worth anyway.