He continued insisting his view that, 'It must be a fabrication or forgery from a later period', while saying that 'It is a very rare document that narrated the political situation of that time with such accuracy.'
「これほど的確に当時の政情を物語る文書も珍しい」としながらも、「後世の改ざんかねつ造」との見方を主張し続けている。