Motohisa YASUDA could not erase the doubt over the "Hyakuren-sho" and noted in "Nihon no Rekishi, Vol. 7, Insei to Taira " (A history of Japan, Vol. 7, The Cloistered Government and the Taira family), 'if the measures mentioned in "Hyakuren-sho" were carried out, it must have been by nobles below Sadaijin (the senior chief of an Imperial Japanese Council of State, ranked above Udaijin) Toshifusa, in collusion with Kanpaku Morozane and did not reflect the will of the emperor.'
この件は、安田元久も『百錬抄』には疑いを拭いきれないようで、1974年の『日本の歴史(7)院政と平家』の中で「もし『百錬抄』にいう措置がとられたのであれば、それは左大臣俊房以下の公卿たちが、関白師実とともにとった処置であって、上皇の意志からでたものではなかったことになる。