Exactly! (Score 2)

Had Richard answered his question, Jorrit would sign the NDA, get Crystal Space to run on PS2 and everybody would be happy, right? But that's not the point. This is about standing for what you believe in. Just like some other reader pointed out, he isn't telling Jorrit what to do. Instead, he wants him to decide for himself, based on what he thinks is right or wrong. I think it was very wise of Richard not to answer his question. He believes NDAs are bad, and he's doing the right thing by not supporting them. By not answering the question he is sending a message to Sony, telling them to change their practices that are taking away our freedom.
And btw: It's a good thing this article got posted on Slashdot. I think RMS makes a lot of good points and it's definitely an interesting read.