The stupid thing is, there are a host of themed gangs in Night City. The Voodoo Boys are one of the more popular with Cyberpunk fans, and will likely feature throughout the game, but you're going to run into a gang full of white dudes and gun them down in a ballet of violence as well... they just decided to show an early slice that didn't feature those enemies.
Also, it's going to be hard to have an obsession with the racial characteristics of NPCs in a world where body modification is a normal as you can get and most people are mixed.
god i can't imagine trying to market anything to the resetti smooth brain demographic. if it's not 100% perfect reality just as they expect and want it they lose their goddamn minds.
only show one black person - "oh so you hate POC huh?"
show all black people - "guess it's just going to be black people killed in your white supremacy sim"
show no obvious trans people - "shocking, no trans reps because its a studio of bigots"
show obvious trans person - "WE ARE A CULTURE NOT A FETISH"
luckily these dopes have no buying power so they are pretty much irrelevant to marketers