Their wisdom was acquired by relying on Spiritual Qi. In essence, they did not possess true, sufficient wisdom of their own. Once the Spiritual Qi vanished, their wisdom—no, forget about wisdom, even their very existence would struggle to survive.
After coming to this world, the Wish Pot was drawn to the original owner of this present body. Upon learning what the child's wish was, Uchiha Brahman felt a surge of compassion and decided to fulfill the poor child's wish.
That was an immensely grand, idealistic wish, one that theoretically could never be accomplished by this child in a lifetime.
Chapter 232