Even though evidence is overwhelmingly for Aryan migration theory, Indians politicized it for election points. I don’t see Iranians, Spanish, Italians, English, or any other Indo European speakers claim against evidence that Indo European language originated in their home country. Only Indians make that outrageous claim.
But this goes in the line of claims that ancient Indians invented internet, space travel, calculus, nuclear weapon, cellular tech and soon to be claimed by Indians... Internet of Thing and self driving vehicles as an ancient Indian invention.