Actually the Indus valley civilization belongs to the Dravidan people.. thats the present South Indians. The Survival of Brahui; a Dravidian language, spoken even today by large numbers of people in Baluchistan and the adjoining areas in Afghanistan and Iran, is an important factor in the identification of the Indus Civilization as Dravidian. Brahui belongs linguistically to the North Dravidian group with several shared innovations with Kurukh and Malto; no dialectal features connect it with the South or Central Dravidian languages. So Brahui represents the remnants of the Dravidian language spoken in the area by the descendants of the Harappan population.
Dravidian languages - Indopedia, the Indological knowledgebase
No western historian has accepted that wishful theory, obviously made in India. This theory is so ridiculous that its not even funny.
You pick Brahui, compare it with Tamil, and see similarities, and then you reach a totally random conclusion that IVC were Dravidian?
I honestly dont see how that works, there is a huge gap in that theory, number one being, what did the Brahui have to do with IVC?
Even if the Brahui were "related" to tamils, you seem to have made up every part in between.
Lets for the sake of argument say that the Brahui are descendants of the IVC- Okay...Full stop, you have your answer, why pull the Dravidian in this theory again?
I suppose you also have a theory explaining why the IVC people abruptly stopped building huge cities when they entered India?
Why not for once look at evidence and accept that proof of IVCs existence lies in the cities, and if there are no cities, there were no IVC people there, so please do let me know what on earth makes the Tamils descendants of IVC.
In case you cant let me tell you. All the Pro Indian theories appeared mysteriously after 1947, go figure.