The only reason naan is in India, is one of the many people who conquered that area brought it there.
You can say it’s popular there, but it’s still not Indian food. Just a dish that’s popular in India.
And I have zero idea what the tomatoes rant was about…
Italians got a new ingredient and incorporated it into existing dishes or made completely new ones. It’s not like someone shiped spaghetti sauce to Italy and Italians just decided they should claim they invented it like you’re doing with naan.
Or that someone from another country moved there and showed everyone how to make it like Butter Chicken.