Emphasis of the emperor's lineage from naturalized settlers was done in order to overcome the negative image of having deposed and expelled Empress Inoe and her followers, and it is natural to regard the move as a plan formulated by the backers of Emperor Kanmu.
帰化人の血筋の有用性を強調したのは、井上皇后一派を失脚・排斥したイメージを払拭するため、桓武擁立派の企てと見るのが自然だろう。