Well, my understanding is that the higher BIPOC risk is because BIPOC folks are more likely to hold at-risk jobs in low education/low income neighborhoods (because education's funded by tax payers, so historically being literally killed -> no money when you're not anymore+segregation -> less funded schools - > less resources and education in BIPOC neighborhoods -> next generation grows up with less education on average which leads to less income, less school funding, etc. in a terrible cycle for generations) which puts them at greater risk. To put it frankly, if you're BIPOC you're more likely to be in a neighborhood where people are less able to stay home from work, less educated about medical practices, and therefore less likely to implement safe practices.
(In contrast to people who have plenty of resources and education access but choose to dismiss them which is a whole 'nother can of tuna.)
Combine that with good ol fashioned systemic doctors don't understand what diseases look like in BIPOC and have weird terrible ideas about it because all research is done on broke white college kids, and it becomes a mess. It just goes way further than "If you get some sun it helps". If you get some sun it helps, but it will cancel out fast if you're not also staying home, in high mask compliance environments, low stress, etc. I guess it's like if you're a construction worker that has to interact with 2 dozen other people every day and share tools and even close quarters with other people, and your wife works retail in a low-mask-compliance neighborhood, and your kid goes to a public school trying to stay open-and-in-person because people are threatening to cut their federal funding if they don't, and you can't afford to homeschool because you both have to work.... You can't expect a little extra sun to make or break your risk levels.
So my understanding is it's just a giant systemic cluster of awful. A straw that breaks the camels back in other words.
(In contrast to people who have plenty of resources and education access but choose to dismiss them which is a whole 'nother can of tuna.)
Combine that with good ol fashioned systemic doctors don't understand what diseases look like in BIPOC and have weird terrible ideas about it because all research is done on broke white college kids, and it becomes a mess. It just goes way further than "If you get some sun it helps". If you get some sun it helps, but it will cancel out fast if you're not also staying home, in high mask compliance environments, low stress, etc. I guess it's like if you're a construction worker that has to interact with 2 dozen other people every day and share tools and even close quarters with other people, and your wife works retail in a low-mask-compliance neighborhood, and your kid goes to a public school trying to stay open-and-in-person because people are threatening to cut their federal funding if they don't, and you can't afford to homeschool because you both have to work.... You can't expect a little extra sun to make or break your risk levels.

So my understanding is it's just a giant systemic cluster of awful. A straw that breaks the camels back in other words.