Why did Sai Baba want his story written down by a famous author from Delhi?

The provided texts do not mention the author being from Delhi or being famous prior to writing the stories. Instead, Chapter 2 explains that Sai Baba felt compassion for the devotee who wished to compile the stories and gave his full help. Sai stated that the author was "merely a pretext" and that He Himself would write His own story, requiring only that the devotee dissolve his ego and surrender. The texts describe the author, later named Hemadpant, as initially being mischievous, cynical, and prone to argumentation before this divine work began.