Why are detailed, comprehensive biographies considered superior for devotional practices like Parayan compared to shorter works?

The source material from Chapter 0 explains that while poets like Shri Dasganu Maharaj included biographies of saints in their works, these were often too brief, spanning only two or three pages. This brevity makes them unsuitable for a dedicated Parayan or Saptah. A detailed, poetic Guru biography, on the other hand, allows the writer to perform a profound act of Guru service. More importantly, it provides the congregation of devotees with a substantial text to study and perform Parayans, enabling them to achieve the purpose of their lives and fostering a deeper, more comprehensive engagement with the saint's life and teachings.