Here's why:
* Surnames are not always indicative of caste: In many parts of India, surnames can be adopted for various reasons - family tradition, place of origin, profession, etc. They don't always reflect a person's caste.
* Caste is a complex social hierarchy: The caste system in India is a complex and multifaceted system with many sub-castes and variations. There's no simple mapping between surnames and specific castes.
* Promoting inclusivity: Focusing on surnames to determine someone's caste can reinforce harmful stereotypes and prejudices.
It's important to respect individual identities and avoid making generalizations based on surnames or other factors.