This isn't the same as "drinking fountains for black people" because it's targeted programming but it's not exclusionary.
"Drikning fountains for black people" existed because "Black people using white drinking fountains" was prohibited. It wasn't a preference.
Presumably black people who like to see shows with [non-black] diversity are already having their needs met. Addressing a market whose needs are not being met has business (and social) value.
Wow, that is egregious. We ban accounts that stoop to vile tropes like that. I doubt that you intended it that way but you did it anyhow—seriously not cool. If you want to keep commenting on HN, please don't do anything like that again.
The gratifying thing is that the commenters who replied to you were so entirely decent. That's the sort of thoughtfulness that you ought to be practicing, even when you encounter something that rubs you the wrong way on the internet. Or rather, especially then.
Maybe some black people like to see shows with diversity, too.
In some other post someone was commenting how their wife, who is a director of advertising, got complaints for using a white female hand for an advertisement. I proposed using profile information to show people advertisements of people that matched themselves, but that was met with disdain in HN. It was argued that we need more diversity, not pigeonholes for people to be isolated in their subcultures.
Honestly when I read the title, I immediately thought, "Drinking fountains for black people."