The libertarian passion for property rights is well known. So, the inheritance of social capital on caste lines can't be disputed. Seen in the light of the assertion that heredity is merely a mechanism, preservation and nurturing of skills within the safety of the family is surely a means that serves a larger social purpose. Thus, treating the Varna taxonomy as decoupled from progeny might not be wholly convincing.
As Mayawati woos the Brahmins in UP, the hold of the age-old social stratifications comes under focus. Justice Katju might choose to slam it as castiesm, but the logic of division of labour, calibration, and branding has been driving this whole system uninterrupted. [TNM55]