I am an Airbnb host and once rented to a black couple for a month.
After that I had a lot of "black" content (people) suggested on my youtube.
It's a difficult(AI), but especially solved problem that only big companies have and they are obviously doing (approaching - as a small startup) it wrong...
... which is kind of a surprise, because YC is such a renowned VC/incubator.
Looking at the other startups they support lately it is sad to see what they have become: Supporting minoritie's interests for the sake of it (statistics).