I see it as a perversion of history. It all starts when a new category of scientists, ie linguists realize that Latin and Sanskrit are connected in the hip. The contemporary reality of their times makes them pre supposed erstwhile Europeans came to India. This also helps them develop the savior complex and absolve any guilt of colonizing.

There is more linguistic and genetic evidence of people moving out of India than into India. So Europeans are native to India and all humans before that are native to Africa.

The big reason why people take issue with it now is not the perversion of history though. It is the politics that this perversion has enabled.

There is a state (Tamil Nadu) that resists Indians from other parts to maintain a proud “Dravidian” heritage. These idiots did not see Britishers as any more foreign ruler than rather their cultural elite “Brahmins” (who were elite only because of the acceptable coolie status British rule gave them) as the aryans who came to destroy their culture. They so called Dravidians have a toxic narrative that relies heavily of the dim-lit theory that has gained traction in other parts of India where they are asking for identifying indigenous status of most castes and the exclusion of certain upper castes as invaders. They also extend strange theories of a connection with Africans through a lost continent of lemuria.