They regard the traditional ancient Japanese history as one still under the influence of Kokoku Shikan; Kokoku Shikan (emperor-centered historiography based upon state Shinto), and insist that it should be replaced with the Kyushu theory and, saying `It enables an explanation about the mystery or inconsistency of ancient Japanese history without difficulty.'
従来の古代日本史学をいまだ皇国史観の影響下にあるものと見て、本説はそれに代わる新しい史観であり、「日本古代史の謎や矛盾を無理なく説明できる」と主張している。