USA is currently the middleman imposing their charges on these transactions through USD based settlements.
With the creation of new CBDC, the USD charges will be vanished and thus USA will be eliminated as a middleman.
This will definitely provoke USA against India but this will eventually happen and thus valuation of USD will decrease over time.
I was expecting UPI to reach UAE. I remember I saw a few news on mainstream me India discussing UPI & PayU be part of the payment system in a few countries. I vaguely remember UAE, Vietnam, Singapore, and Srilanka adopting it. I am not sure if it will benefit the expat as it is still not clear what would be the fee for transferring from UAE and vice versa. BTW, do you think the government cares about US and Europe? India is still importing oil from Russia.
If the government would care about US they wouldn't be going against them by creating a CBDC afterall.
India is doing what it has to do and this is the only way it will overcome the current issues and develop in future.
UPI has certainly reached many countries now thanks to India. Let's see how far the new CBDC reaches.