It doesn't matter that much which oil goes to whom... for the most part, oil is oil, so if Arab oil can't be exported, China will just buy it from Russia instead.
Who benefits from this mostly is Russia, because they can sell their oil at a higher price.
@cjd They're free to buy from anybody they want to. However, it does matter when your country has been cut off from it, and the larger narrative is to punish us & take down the West.