Why do people comment on these websites about Kanye West only dating black girls?

I just notice when I read the comment from online magazine articles people will say they like the fact that appreciates black women, keep it black, blah, blah. Okay my question is, why do they think he would not date a white girl? I've heard him say in a more crude way that he likes mixed girls, both of his public girlfriends were a lighter shade than him, he's an admitted addict so of course he's seen plenty of white women in a ual/sensual way. And I haven't heard him say publically he hates white girls, out of all the crude things he's said, he hasn't said that. What do you think?