I think the proof of racism is the fact that people will dislike him no matter what. People in EA complained that he was boring apparently even tho I think he was more interesting than FR. And now people think hes even more boring, sorry but I do.
This does not suggest that people dislike him no matter what. I haven't played EA, but in the "final" product, he is most certainly boring. He is constantly overshadowed by the side characters of his story. Even his final quest has almost nothing to do with him.
They have probably made Wyll like this to avoid the criticism of people like the OP, who love to yell racism at every half-opportunity. It was most likely a corporate choice, based on marketing considerations. They needed to include a black character, but could not risk to make him complex and thus potentially controversial. We need to remember that this game is not a piece of art created by a single artist with deep personal convictions, but a product to be sold to the masses.