Based on these stories, does Sai Baba help people with both worldly and spiritual matters?

Yes, the text concludes with a powerful assurance on this very point. After recounting the stories of devotees like Appasaheb and the internal struggles they face, Chapter 33 explicitly states that Sai is capable of granting the fruits of a devotee's desires, regardless of their nature. The text says that for any 'devotee of undivided faith,' whatever purpose they desire, 'whether worldly or spiritual,' Sai is capable of fulfilling it. This serves as a concluding message of hope, using the preceding stories as a foundation to reinforce the idea of Baba's omnipotent grace for his faithful followers.