Separate but equal was a dismal failure in the US. I don't understand why it deserves a second attempt.
It was not a failure, it was an lie that succeeded quite well at exactly what it was supposed to do, and was struck down for exactly that reason.
But there is a difference between de jure segregation of public services to assure that one community is underserved and crafting of commercial services to the serve a distinct set of preferences associated with a particular demographic.
https://www.epi.org/publication/schools-are-still-segregated...
That seems less like segregation and more of just statistics. If black students are a minority, then by definition they won't be a majority in a random subsample.
> As shown in Figure B, black students are also in economically segregated schools. Less than one in three white students (31.3%) attend a high-poverty school, compared with more than seven in 10 black students (72.4%).
That's probably the stronger argument in your link. That outcome isn't surprising given that most school funds come via property taxes - if most economically depressed areas are minority occupied due to lower costs, then those same schools would also be economically depressed.
The residents in their area are mostly black.
> Why is school funding tied to property taxes?
That's how most of your city is funded.
> Why isn't there a level of mobility that would allow students to go to a more well funded school?
There is? Like, you can move to a different school district but it's going to be more expensive. Nobody is preventing you.
> Who made these policies and why?
It's not clear what policies you are referring to. That we fund things via property taxes?
I disagree with your implicit assumption that all bubbles are inherently negative.
Regardless, who decides which category a site/app falls into? There are legal remedies that can fix literal "war between 2 camps", everything else is freedom of expression.