Such a magnificent composition was almost unparalleled from the end of Toyotomi period to the beginning of the Tokugawa period', but Tadachika KUWATA refuted this saying that 'It was just a forgery by a dilettante in a later period' and Kenichi NIKI added in the 1980s, 'Even the old document called "Naoejo" was forged.'
否な豊臣の末期から、徳川の初期にかけて、かかる快文字は、ほとんどその比類がない」と絶賛したが、一九八〇年代には桑田忠親は「後世の好事家の偽作にすぎない」、二木謙一は「『直江状』と称する古文書までが偽作された」と唱えた。