Apparently same-sex relationships are accepted in WOT as a matter of course, and racism is completely nonexistent. RJ's quotes state as much, too.
Now, I'm thinking that this is a remnant from the more enlightened Age of Legends, where such things probably truly were nonexistent. But isn't it a bit implausible? We're treated to a lot of other signs of provincial attitudes (2rivers initial hostility to strangers) and outright xenophobia (Aiel) and since black people appear fairly rare in the main continent, I would expect some prejudice at least. Or maybe a character wondering if a random Sea Folk person was badly sunburnt or something.
Homophobia, and to a degree racism, is rooted in religion, especially in religions like Christianity and Islam. These don't exist in Randland and no one ever said 'guys can't be together' in some tome from the AOL, so homophobia never started.
Discrimination always has a chronological but usually senseless origin. Rand has encountered 'racism' for looking like an Aielman because of his red hair. That came from the war with the Aiel as well as the general 'barbarism' witnessed by people when they met the Aiel.
Fan of Lanfear