It says nothing about "asian people". Verbatim quote, in full:
> The contest is open to individuals or teams of individuals who are legal residents or citizens of the United States, United Kingdom, European Union, Canada, New Zealand, or Australia.
> The contest is open to individuals or teams of individuals who are legal residents or citizens of the United States, United Kingdom, European Union, Canada, New Zealand, or Australia.
> ...not located in the following jurisdictions: Cuba, Iran, North Korea, Russia, Syria, and the following areas of Ukraine: Donetsk, Luhansk, and Crimea.
Showing that the only explicit exclusions are aimed at the usual gang of comprehensively sanctioned states.
[1] https://www.memorysafety.org/rav1d-bounty-official-rules/
Still doesn't explain why the rest of the world isn't in the inclusions list. Maybe they don't want to deal with a language barrier by sticking to the Anglosphere... plus EU?
Turks are Asian. Russians are Asian. Indians are Asian. Etc.
They were probably just wondering why it's limited to Five Eyes + EU.