It is the prerogative of the nation and its people to choose official naming for international usage. If India, like Myanmar (formerly Burma) wanted to choose a native name as their English representation through a formal process, it is disrespectful bordering on hostile to ignore that, especially as a foreign entity like YC. Nobody is saying anyone should change any names, but once they have, it is important it is respected.
This is a complicated initiative, but it's clear that most people do not recognize the impact or meaning of a choice like this. It is considered equally hostile and rude to, for example:
- refer to a divorcee by their ex family name after an official name change
- refer to a transgender person by the name they had previously after an official name change
It's up to the individual what their name is, and making a name official is clearly indicating what they would like to be referred to. It really shouldn't be that much trouble for outside entities to respect that.