Why does Chapter 12 advise against the 'chaos of mixing castes' but also against 'caste pride'?

Chapter 12 navigates a nuanced social and spiritual path. It advises one to 'not have the chaos of mixing castes' and to 'not become negligent of the duties of your class and stage of life (Varnashram Dharma),' which suggests respecting the established social order and its duties to maintain stability. However, it immediately follows this by warning 'nor the pretense of caste pride.' This implies that while one should follow their prescribed duties, they must not develop arrogance or a sense of superiority based on their caste. The ultimate focus, as stressed throughout the chapter, is on faith and devotion, which transcend pride and social distinctions.