says who? we study sanskrit, all our names , words are derived from sanskrit.i agree but sunskrit is already dead in india too what its mean ? no one talk in sanskrit in india today .
I myself studied sanskrit in school. In Italy ppl dont speak in latin any more but customs & culture are still followed.
Word sindhu itself is from sankrit, meaning river.
If you look at every culture they name their children on geographical landmarks like rivers, mountain..etc Even ppl have their surnames based on their village of origin. But pakistani names except a few rarely refer to the country they live in.
How many ppl in your country are named as Ravi or Sindhu ?