I'm not an expert, I think by default they payout in the currency of the country that your business is located in.

In not sure about India, but in AU, we have the option to receive USD payouts to USD accounts in Australian banks, so you can avoid Stripe's conversion fees. But now you have USD in an AU bank. What are your options? Convert to AUD at the bank's terrible exchange rate. Or send the money to a US bank (or Wise), paying horrendous international transfer fees.

I hope I'm missing something but I don't see this offering from Stripe as being very useful.