if you listen to that commentary I posted last page, you'll see an example of that. The point is, these racists eventually have to work with colored people and have to deal with them frequently in society. At that point they may realize that they have been wrong and there is nothing different with colored people. If a top prospect continues to be racist despite spending years working with colored teammates, then something is wrong.
Bringing back to the sexuality comment, sexuality is not talked a lot about in baseball. It's just not something that relates to baseball or is visibly evident. So you can see how someone could have lingering feelings about a certain sexuality. Your religion reinforces it, and baseball community around you ignores it. So nothing happens. That's why I don't have an issue with what Murphy said. He was brought up with his religion reinforcing his attitudes, with nothing to counteract it.