Far from emancipatory, this map was one of the earliest instances of the practice of redlining, a term used to describe how banks rated the risk of granting loans to potential homeowners on the basis of neighborhood demographics (specifically race and ethnicity), rather than individual creditworthiness.
I'd never heard of the term redlining before, but it just makes so much sense as a concept. Doing this is actually very popular back home in Bulgaria, in the context of the Roma population asking for loans/credits. People are biased to believe that Roma people are scammers and too poor to be able to maintain any creditworthiness, so they deny them loans purely based on their ethnicity. I'd never really thought about it, but I think it's such a discriminatory way of determining who's "worthy" and who's not.