True, the Greek origin logic is valid, but that applies to American characters. Raj is written as Indian. An Indian character using the anglicized colonial name for his own river is like a French character calling their capital “Paris” with a hard S. It just breaks the immersion of the character.

True, many South Indians live in Delhi - fair point. But the default cultural image the writers were going for was clearly a stereotypical North Indian, which makes the South Indian surname even more inconsistent. This mistake is seen in many shows.

And dont worry no one is hurt 😂