From the above:
I don't see how this would not destroy the AIT.Three years after digging out human skeletons from the Harappan-era graveyard in Rakhigarhi village, archaeologists have concluded that there was no large-scale influx of foreigners or migration of locals, indicating those living in Haryana and the Ghaggar basin now are descendants of original inhabitants.
Prof Vasant Shinde, Vice Chancellor of Deccan College, Pune, said on Friday that the DNA analysis of 5,000-year-old skeletal remains belonging to the Indus Valley Civilisation revealed that there had been no migration from this region for the last 10,000 years.
Swami Vivekananda said the same thing, IIRC, based on his extensive (foot) travels all over India - (to paraphrase) "Don't believe any such nonsense as Aryans in the north or Dravidians in the south. I can tell you that the people all over India share a common ancestry." This might be a pretty bad paraphrase, actually, got to look up his actual quote. But his anti-AIT views were pretty well known, and vehemently expressed.