You're exaggerating. Chicoro's book was number one in the beauty books on Amazon following Kim's review. The products didn't fly off the shelves. The article stated that where she lived kinky curly sold better because her recommendation in her leave-in concoction. A lot of youtubers, after becoming relatively well-known, launch their own product lines. Black oynxx is an example. She seems like your standard upper middle class woman to me. No need to make such a huge deal about.
I do, however, wish her success because her videos are helpful, even though her voice can be annoying. She tends to over enunciate and some take that as condescending, but she has foreign viewers as well so I guess that's why.