[digression into risky territory, here be dragons]
...at least, that's the idea if you believe that racial differences are 100% socially constructed. It gets super tricky if it turns out there is an inherent component, which is why the very idea is such a taboo. It wouldn't be especially shocking, from a scientific standpoint, if it turned out that different "races" tended to have subtly different inherent personality traits that might be of interest to creditors or insurers. But it would cause major headaches, if you want to convince people to break those feedback loops! Even if the inherent differences are only a seed, and the feedback loops account for most of the differences in outcome, you have a massive "political" problem on your hands.
Depending on the situation the same people behave differently. So it's not the skin color in itself but the different context that makes races behave differently. Being poor or uneducated for example is a better prediction of defaulting on payments, but race, wealth and education are correlated.
The affordances of the context influence choices - how many good options vs bad options you have in your situation. For example, people who would behave perfectly OK in normal life might try to cheat the system to get vaccinated sooner. Because they only got bad options, they might pick a bad behavior. "I got no choice!" Equality of opportunity, and not of outcomes, seems to me the best approach.
The reverse of this is also happening - in the more developed and feminist leaning cultures fewer women choose to do scientific research. Why? They got better options, so many great choices to pick from. It's insulting to question people's choices when they are made in an abundance of good options, as if they were children who can't make their own decisions.
But then on the flip side, if you look at say, athletic selection for a sport like basketball or athletics, you'd find that race is inherently a criteria, because certain races seems to have an inherent advantage (or more correctly, certain races seems to have a _disadvantage). But nobody ever says anything in those cases.
I think a charitable explanation for why this is, is sports is pretty much always a voluntary activity, so it's natural to not get as worked up over either implicitly or explicitly favoring a race, compared to, say, doing the same thing in employment or scoring someone's credit, which will almost certainly impact everyone in society involuntarily.
Using race captures an obvious group of people by how they've already been discriminated against
It’s like applying for home fire insurance and saying you burned down your previous 3 homes and will likely burn down this one.
These feedback loops you're referring to, what order are you proposing for your chicken and your egg? What's causing what in your view?
This is a strange take. If you had to "consent" to laws there would be utter chaos. The places where you can pick and choose which laws apply to you have no real laws. And all of those places are dangerous and destitute. That's why laws are decided by the majority, there will always be dissenters for every law out there. Some harmless, but others that want to pillage, burn things down, and worse.
There will always be laws that you don't like, unless there's no laws at all.
The government plows the streets. Provides police and fire service. Makes sure street lights and sidewalks exist. Handles deeds for property. Handles court cases. If you had to "consent" to all these services providing benefits to other people the entire government would cease to exist.
"I have to consent to anything that doesn't directly benefit me" means a ton of things aren't even going to exist when you actually need them.
Which one of the causes was first in history seems academic and immaterial if we're at t>0 and wanting to devise a strategy to slow it down or stop it.
But you do not socialize the cost, you just move it on someone else.
For example, we have two people A, B, with risk-assessing algorithm risk1 gives risk1(A) = 3.3, risk1(B) = 2.9. Risk limit for creditors is 3, so person A would not get credit.
But risk1() uses same forbidden information, so we use instead less informed risk2() that got risk2(A) = 2.9, while risk2(B) = 3.1, so now person A would get credit, but person B would not.
Shouldn't we be allowed to everything into account when determining credit worthiness? Even if it's socially uncomfortable?
We get locally more accurate pricing / risk assessment that way, but we also create feedback loops that we as a society have decided we want to not contribute to. The cost for this is the pricing inaccuracy which we collectively eat.
So, I don't think you're wrong, but maybe consider if what we're socializing the cost of is worth the price?