Given that other books about Sai Baba already existed, how does the author of the Sai Satcharitra justify the need for this new text in Chapter 2?

In Chapter 2, the author anticipates that listeners might question the need for a new book when works by Das Ganu and others already exist. He resolves this doubt by comparing Sai’s life to a vast, deep ocean and an infinite mine of jewels. He humbly describes himself as a small bird trying to empty this ocean, an impossible task. Therefore, he argues, one should find satisfaction in whatever can be told, as it's impossible to describe Sai's life completely. This new text is his contribution to sharing some of the infinite stories that provide peace and steadiness of mind to devotees.