However, this article is not reliable as a historical source, and seems to have been inserted by an editor of Nihon Shoki later; since the period of Wei (220 - 265), Chinese people decided 'not to use joshi any more,' while Kenzo no ki (records of the era of the Emperor Kenzo) still used joshi, and moreover, in the ninen no jo (article of the second year of the Emperor Kenzo's reign) of Kenzo no ki, the family names based on the ranks of headdresses appeared, though these were the names used around the seventh century, and there was a gap in the official record until the eighth century.
しかし、魏(220年～265年)以降「3日を用いて上巳を用いず」としており、顕宗の記が依然として上巳を用いているほか、顕宗の記2年の条では喜び集まったの記載にある公卿以下といった冠職姓は7世紀ごろの呼称であり、公式の記録も8世紀まで飛んでいるため、この記事については日本書紀の編者が挿入したとみられ、史料としての信憑性は低い。