Why are the collected biographies by poets like Mahipati and Dasganu Maharaj not ideal for an in-depth study of a single saint?

The texts from Chapter 0 explain that while famous poets like Shri Mahipati and Shri Dasganu Maharaj wrote significant collections of saint biographies in Marathi, such as Shri Bhaktalilamrut and Shri Santalilamrut, these works are not suitable for a detailed Parayan or Saptah of a specific saint. The reason provided is that the individual biographies contained within these larger works are not comprehensive or detailed. They are often very brief, sometimes taking up only two or three pages, which makes them insufficient for a focused, deep study of any single saint's life and teachings.