Breaking caste destroys Brahmin power, so Brahmins cannot lead the movement.

Evidence

But in all this it is forgotten that the break-up of the caste system is bound to adversely affect the Brahmin caste. Having regard to this, is it reasonable to expect that the Brahmins will ever consent to lead a movement, the ultimate result of which is to destroy the power and prestige of the Brahmin caste? Is it reasonable to expect the secular Brahmins to take part in a movement directed against the priestly Brahmins? In my judgement, it is useless to make a distinction between the secular Brahmins and priestly Brahmins. Both are kith and kin. They are two arms of the same body, and one is bound to fight for the existence of the other. — Ambedkar, B R, Annihilation of Caste_ The Annotated…, 961

Categorization

• DEEPTHINKING: The structural self-interest argument: secular and priestly Brahmins are inseparable, so the entire intellectual class is constitutionally opposed to caste destruction—explains the movement’s dead end.