Do you think it’s a coincidence that almost all the world’s rich people are (white and) from the global north while the almost all the world’s poorest people are in the global south?
What queermunist is saying has got almost nothing to do with what people, including wealthy Saudis, think. It’s not an idealist claim. It’s material reality. You may be missing some of the subtlety in what’s being said.
I’ll turn it around: could a wealthy Saudi go to the US, France, Germany, Britain, etc, and start making demands like representatives of those countries could make of and in Saudi Arabia? If not, why not? If yes, then why do countries like SA keep the prices of exports below market prices, allowing western importers to charge the difference in tax to prop up their welfare systems? Bear in mind, too, that whiteness is a political category, a ‘floating signifier’ in the words of Stuart Hall. It’s got nothing to do with biology and little to do with skin colour.
You might want to look up the concept of racial capitalism to develop a more nuanced view of the claims being made. Or watch Hall’s lecture on the [floating] signifier, followed by reading something by Frantz Fanon.