I don't know, she's all over the place with her comments. In 2015 she tweeted:
Then last year she tweeted:
And when somebody asked her when she'll do an Ir scene, she said:
That could mean a lot of things. Very cryptic.
Then last summer, she tweeted:
In response to people implying that she's racist for not doing IR.
Personally, I'd love to see her do scenes for Tushy and Blacked, but I'm not holding my breath. Then again, Karina white ended up doing an IR scene for Blacked and nobody would have ever expected that.
I had heard that in a porn career, women become less valuable once they start doing anal, and IR scenes. Thats what she means about politics. her value to the average porn consumer starts to drop once she crosses the anal and IR line, as those are more taboo in the industry, or puts more of a label on that particular star.
You should check out the Hot Girls Wanted documentary (i believe this is the one) on Netflix that goes into details about all of this.
the TL;DR on this is, She probably sleeps with black guys in real life, but the politics of porn and wanting to maximize her career means that she shouldn't do an IR and/or anal scene, or wait until her popularity is fading to start doing those things.