Now that Brave wallet is live and running, I would suggest that the brave rewards be link to the brave wallet, instead of using third party custodian wallet.
This will eliminate the discomfort of users in countries not supported by Uphold, Gemini and the likes.
In this age and generation, and the era of web 3, nobody should be left out of the loop, by virtue of their geographical location or nationality.
Maybe if you looked around you would understand. It is because Brave wallet is a Non Custodial wallet.
Understand the differences between a custodial and non custodial wallet at the below article →