How did Sai Baba's presence transform Shirdi into a major spiritual center?

The provided text explains that Sai Baba is the sole reason for Shirdi's glory. Chapter 4 draws a parallel, stating that just as Eknath made Paithan famous and Dnyandev made Alandi renowned, Sai Baba made Shirdi glorious. His presence turned the town into a focal point for devotees. It became a place where spiritual practices were simplified through interaction with Him; for instance, His mere sight was considered a yoga practice. Chapter 4 further states that while Shirdi is the center, Baba's field of influence is vast, and his Samadhi in Shirdi is a gathering place for all saints, beckoning devotees from all over.