Sibys interesting links but me thinks they go too far.
The black woman is not necessarily going to fair better if more white women date black men, in my humble opinion. Indeed some black women already complain it is hard to find a good black man (their preference presumably) because so many black men date white women.
The second link includes "... are many situations that might not be explicitly romantic, but are nonetheless a lot like a first date. A job interview. Trying to rent an apartment. When you meet your freshman roommates..."
No, just no. A job interview is not like a first date! This is very off thinking. This kind of guilt tripping won't work on men but might swing women due to guilt. Lovely. As my son might say - hashtag not!
Plus dating sites are not just sexual preference. You are looking to start a life with someone. Maybe influences like having children together may come into it. I was never put off the idea of kids with my Indonesian boyfriend, in fact I thought it would be lovely. But some may have preferences with whom they have kids with. That seems fair. Racism isn't fair. So I cannot see making life choices about partners and possible kids has a racist element.
Where I do see racism generally entering the picture is in terms of employment and this may interact with dating. So a high flyer in any profession may encounter, in the west, fewer non white people through work, maybe through university even.
They may therefore make assumptions about non-white people in terms of life experiences, education or earning power etc. These may impact people's perception of others, all people, any people, of any others. These views do need challenging, access and opportunities need changing.
However, the opportunity to be a person's sexual partner is not part of this exactly because a first date is not like a job interview!