The novelist Haruhiko HIGUCHI writes in his book "Nobunaga no kashin-dan--'Tenka-fubu' wo sasaeta busho 34 nin no kiroku" (The Vassals of Nobunaga--A Record of 34 Commanders Who Supported 'Tenka-fubu' [a slogan that means that the samurai governs the whole world]) that the reason that Nobumori was banished was that Nobumori, who held territory in both Kinai and Mino, was an obstacle to Nobunaga, who owned Kinai and Mino as the directly controlled land of the Oda family and also had an idea of unifying the whole country, and HIGUCHI also claims that the letter of chastisement consisting of 19 articles was Nobunaga's false accusation written in order to confiscate Nobumori's territory with no conditions.
作家・樋口晴彦は著書『信長の家臣団―「天下布武」を支えた武将34人の記録』の中で、信盛が追放された理由は、畿内・美濃を織田家の直轄地とする信長の天下統一構想において双方に領地を持つ信盛の存在が邪魔になったためで、19ヶ条の折檻状は無条件で領地を取り上げるための言いがかりであったとしている。