The funding that EWC gets is literally directly coming from the Saudi Public Investment Fund, which is directed by the crown himself. Everything that it funds was funded by the direct consent and direction of the government of Saudi Arabia. The US and China go about their soft power influences in different ways that are probably equally as reprehensible, but when it comes to esports, EWC is literally directly funded by the Saudi government, while stuff like VCT CN/AMER and LPL/LCS are just sponsored by American and Chinese companies.
When it comes to hiding international human rights abuses and crimes against their domestic populations the US and CN usually just kill their activists or hide it all under layers of bureaucracy and intelligence agencies, they usually don't go out and sponsor massive "bread and circuses" type events to reform their image (other than the World Cup right now)