There is no doubt that Takechiyo's life was full of sufferances, such as the personal humiliation he received from one of Yoshimoto's vassals (Tomoyasu HARAMIISHI), so it is only natural for the subjective standpoint of the Tokugawa family to be extended to the traditional common view.
また、竹千代が義元の家臣（孕石元泰）から個人的な虐めを受けるなど、忍従の日々であったことに違いは無く、後世、徳川家側の主観のみが広がり、従来の通説になったと考えられる。