Soldato
See this is naive, you're conflating something based on need with the topic of this thread which concerns something based on an arbitrary characteristic - race/ethnicity.
White and black university candidates come from all backgrounds, the race of a given individual shouldn't be relevant when it comes to awarding a place or awarding a scholarship.
If you read the details of the scholarship, it isn't just decided on race:
https://www.undergraduate.study.cam.ac.uk/stormzy-scholarship
You have to also be in receipt of full financial assistance from Student Finance and household income and other socio-economic data suggesting being from a disadvantaged background is ranked and taken into account by the selection panel.