All this debate about Vedas and the supposedly "aryans" is because of Max Muller and his dating of Vedas to 1200 BCE. He did it on a very ad hoc basis and when his contemporaries, such as Goldstucker, Whitney and Wilson, challenged his methodology, he surrendered by saying,

“Whether the Vedas were composed in 1000 or 2000 or 3000 BC no one on earth can ever determine.”

The pity is that in spite of such a candid confession by Max Muller himself many of his followers even today stick to this date, or at the most give concession to 1500 BCE.

The debate was further fuelled by Romila Thapar and R.S Sharma with them bringing "Aryan Migration Theory" and claiming "The pastoralists who moved to the Indian borderland came from Bactria-Margiana Archaeological Complex or BMAC which saw the genesis of the culture of ..

the Rigveda.” However these assumptions are baseless. Now I can give a lot of reasons for disapproving with AIT and AMT but ill stick to the summary right now.
The BMAC is not a product of nomads. It has fortified settlements and elaborate temple-complexes. It has yielded a ...

very rich harvest of antiquities which include silver axes, highly ornamented human and animal figurines and excellently carved seals. But what is more important is that no element of the BMAC has ever been found east of the Indus which was the area occupied by the Vedic people.

So there is no case whatsoever for the BMAC people having migrated into India.

For those who seem to support AIT or AMT on the basis of genetic proofs. The application of DNA research to the Aryan debate is nothing new. The renowned scientist Sanghamitra Sahoo and colleagues had declared: “The sharing of some Y-chromosomal haplogroups between Indian and ..

Central Asian populations is most parsimoniously explained by a deep, common ancestry between the two regions, with the diffusion of some Indian-specific lineages northward.”