Dilip Chakrabarti's comments (1986) are of relevance here: "Archaeology must take the entire basic framework of the Aryan model into consideration. I… - Dilip Kumar Chakrabarti

Indians would certainly try to understand the fact that for more than a hundred years in the late fourth, third and early second centuries BC, there was a state which controlled the entire natural geographical domain of south Asia. Not even the British controlled such a large area for such a long period. This fact should in any case be one of the answers to the notion that there have only been divisive tendencies in the political history of India.

...without bothering to find out if.. such blind fetishism did not sometimes lead to a theoretical position undermining the Indian national identity.

Regarding the pastoral nature of the Indo-Aryans, Chakrabarti (1986) adds a further observation that "the inconvenient references to agriculture in the Rigveda are treated as later additions. The scholars who do this forget that effective agriculture is very old in the subcontinent, and surely no text supposedly dating from 1500 B.C. could depict a predominantly pastoral society anywhere in the subcontinent. Something must be wrong with the general understanding of this text" (Chakrabarti 1986, 76). In other words, if the Indo-Aryans were pastoralists, they must have always coexisted with agriculturists in India since agriculture predates the assumed date for their arrival by millennia. There could never have been a purely pastoral economic culture.