Accordingly, the description in "Nihon Shoki" in which Matori took the position of Oomi and wielded arbitrary power is not accepted as a historical fact; it is explained that the story was intentionally made up by the Heguri clan themselves driven by a feeling of competition to the Soga clan who is considered to be the descendant of the same TAKENOUCHI no Sukune as the Heguri clan.
従って、真鳥が大臣に就任して専権を振るったという『書紀』の叙述は史実として認められず、平群氏が自氏と同じく武内宿禰の後裔氏族である蘇我氏への対抗意識から故意に作り上げたのだと説明されている。