Why is the Guru biography by Shri Samarth Sadguru Vasudevanand Saraswati Maharaj considered to be in a separate category from the works of Saraswati Gangadhar and Annasaheb Dabholkar?

The text provides a specific reason for classifying the biography by Shri Samarth Sadguru Vasudevanand Saraswati Maharaj differently. As explained in Chapter 0, this work cannot be categorized with the Guru biographies written by Shri Saraswati Gangadhar and the late Shri Annasaheb Dabholkar. The explicit reason given is that this particular biography was authored 'by the Maharaj himself.' This self-authorship by the Guru makes it fundamentally distinct from biographies written by devotees or poets like the other two authors mentioned, placing it in a unique category of its own.