True Left

The problem with OIT is that it is still pro-Vedism, but merely wants to claim it is indigenous. So basically we have two groups of pro-Vedics (OITs and Turan-worshippers) who academically disagree with where Vedism came from (India or Turan).

What you need to insert into the discussion is a Vedism-bashing perspective that academically agrees with the Turan-worshippers that Vedism came from Turan, thereby allowing a pre-corrupt India to be imagined by those who never liked Vedism anyway.