In response to it, Hisao HIRAYAMA had discussions with him in a magazine "Kokugogaku" (Studies in Japanese Linguistics) through a series of articles called 'Concerning Mr. Hiromichi Mori's Theory that Nihon Shoki α Group Was Written Based on Original Chinese Sounds,' 'In Response to Mr. Hisao Hirayama, Further Argument for the Theory that Nihon Shoki α Group Was Written Based on Original Chinese Sounds' and 'Discussing Again Concerning Mr. Hiromichi Mori's Theory that Nihon Shoki α Group Was Written Based on Original Chinese Sounds.'
これに対しては『国語学』誌上で平山久雄との間で「森博達氏の日本書紀α群原音依拠説について」「平山久雄氏に答え再び日本書紀α群原音依拠説を論証す」「森博達氏の日本書紀α群原音依拠説について、再論」という論争が行われている。