Fukutaro NAGASHIMA of Kwansei Gakuin University has presented a question about the appraisal of the time the inscription was made, on the ground that the word 'oime' was suspected to have come into use after the Tensho era in the end of the 16th century.
関西学院大学の永島福太郎は、「ヲイメ」という言葉は16世紀末の天正期以降の言葉ではないかとして、碑文の時代鑑定に疑問を呈している。