Why does Chapter 32 claim that Guru's grace is more important than studying scriptures like the Vedas?

Chapter 32 makes a strong case for the supremacy of a Guru's grace over scriptural knowledge. The text explicitly states that even if one has thoroughly studied the Vedas, Vedangas, and other Shastras, this knowledge is considered "mere chaff" without the grace of a Guru. The core teaching presented in Chapter 32 is that true knowledge is simply unattainable without the Guru's blessing. All other efforts, including deep scriptural recitation and study, are rendered incomplete and ultimately fruitless if not accompanied by the essential element of Guru's grace.