Board Thread:Boruto Discussions/@comment-33545035-20191201104904/@comment-1210805-20191204055352

Kaguya's fears also have their roots in her experiences prior to consuming the chakra fruit (which by all indications seems to have been a particularly powerful one). She never actually had a chance to compare her full power with the rest of the clan. Even at her peak, Urashiki does still pose some threat due to his ability to steal chakra (weakening his opponent) and use stolen techniques. His power could be said to scale to his enemy.