The idea that Stoicism, or any other particular brand of philosophy can universally "work" is a maladaptaed approach. Everything is contextual. Philosophy most often fails when it's held in a vacuum as simply a set of academic ideas, for exactly the reason you've just illustrated. You can take them and apply them in a bubble to anything and pretend it has a solution to offer, even if it's wildly unrealistic.
The idea that Sudan, because it's primarily Black is somehow innured to the forces of white supremacy is absurd. Africa has been pillaged for centuries behind the idea of the superiority of the white man. That type of cultural conditioning exists long after the colonizers are gone. None of which is particularly germaine to the conversation at hand since my article is clearly written with the context of the pop-philosophy rennaisance of Stoicism as it exists today, most obviously illustrated by it's resurgence in the USA and Europe. Asking me if it can work in Sudan without the critical race theory is a disingenuous attempt to willfully miss the point I'm trying to make.
If you're genuinely asking if Stoicim could potentially have value to the plight of the typical person in the Sudan, then I'd have to say "Sure, maybe?"... I'm not in Sudan, nor am I Sudanese so I can only offer an academic answer about the potential of Stoicism, which is simultaneously the type of thing I'm warning against in this article. I think the typical Sudanese person has far more answers about what it means to face their struggles than Marcus Aurelius or Seneca do.