Other than making grand speeches, Periyar did nothing substantial towards the annihilation of castes.
Periyar flourished his sword mostly in conferences and during grand speeches, rather than while he was forwarding his political agenda.
Tamil Nadu’s public institutions have been exorcised of the Brahmin ghost and are now ruled by non-brahmins and non-Dalits. It is to hide this that a fake Brahmin-ghost is continuously being exorcised.
The reason is simple. The national intellectual landscape is verdant. The Dravidian landscape, on the other hand, is an arid desert, and Periyar was the only cactus plant to have bloomed in it.