The article makes no mention of people with curly hair meeting each other as a market. It discusses people having curly hair (and, mostly, taking care of it) as a market.
Right. Which is why I doubt the business model of a social network. Perhaps a group buying thing or an Amazon (or etsy) for curly hair products might work. But a social network? That's a stretch. 2 million uniques doesn't mean much if you're talking about a sustainable business model. Uniques do not equal revenue. There are wastelands of social networks that had many more users than 2 million. Also, how was that 2 million verified? 2 million uniques would generally warrant a higher fundraise, the investors are likely betting on a potential business rather than an actual. What's the bounce rate? What's the time on site? What's the demographic profile of the user -- those important questions matter more than a vanity metric of 2 million uniques. Are people engaged with the site? What's the growth rate? 2 million from what? What's the engagement profile? There are a lot of questions that would need answering before assuming that this network is a 'good' idea. Race has nothing to do with it. I'd invest in anything that could turn a profit. Investing only because it addresses a particular racial group without quantifiable metrics -- now THAT'S racist.
Curly hair isn't limited to one ethnic group. There is a actually numbering system for curls (1A-4C, with some permutations) and it traverses different ethnic groups. The numbers are used to make product recommendations, exchange info, etc.