Most of these random OF chicks who start teasing/playing with the idea of bbc and the whole raceplay aspect, some of which eventually do fuck black guys, are in fact being guided in to do so by promotional agencies (and their fanbase as well tho, however a lot of times the cuck fanbase arrives after the shift). A very interesting example was the finnish girl divinekatarina, who went full on into the fetish, went on to fuck a couple of black guys on video, even flew out to that fake-dick sleazeball troy francisco and made a vid with him and then eventually called it quits on OF altogether (she's now trying to be a travel influencer LOL). Anyways, she said afterwards that the whole push into this bbc kink teritorry was a move her agency wanted her to do because they saw good money/potential in it and she was just willing to do it but eventually she didn't like it and quit.
My assumption is, and it's not hard to figure out and has been mentioned here already, all of these girls in the thread are backed by promo agencies who run their socials and have been suggested to go into this fetish as it's obviously the thing that brings a lot of new fans willing to pay a lot. This german chick romyluisaa for example is no different, her accounts are obviously run by someone else, who eventually figured it's a good cash/engagement bait for her to tease with this whole blacked stuff and she happily obliged.