Please post a credible source for whole of your post.
http://www.academia.edu/7193503/Dhruva-the-Ancient-Vedic-Hin...
https://www.researchgate.net/profile/RN_Iyengar
personally dont care about peer review status since we know the reasons westerners reject this information has nothing to do with science but self interest
but you might be interested to know it was first proposed by a european named jacobi before europeans got the desire to be aryan leading to the world war and destruction
video lecture
https://www.youtube.com/watch?v=5R2lXuUMdoo
another person same conclusion
and actual science will head back east to india and maybe china if they can get their act together
this was not noted in the paper itself but only on twitter
you can imagine the ridiculousness of claims that women drove out dravidians and then installed a patriarchy
i hope they do publish cause it would mark the low point of western science future historians can point to as the beginning of the fall
in any case they have no evidence of steppe languages only inferences and we have strong evidence of sanskrit in india 3000 BC well before the fake aryan invasion claims of 1500 BC
indians date it quite securely via astronomical observations in the texts of dhruva the pole star to 3000 BC or 5kya
dhruva was thuban or alpha draconis of draco or the indian constellation sisumara whale dolphin
there were no pole stars from about 2300 BC to 1500 AD but the knowledge of the previous one was preserved in india
the rig veda and some other vedas even predate the dhruva observation but have not been securely dated