Weirdly confused comment. If it is dependent on generation, then it isn't 'hard-coding', is it? It's socialisation. And clearly he didn't (at least in the interview itself) demonstrate that he's learned this lesson, that's kind of the whole problem. He showed little sign of having grasped the problem with collective-blame.
That you find racism so easy to forgive tells me something.
Oh, please, I'm not forgiving racism. I can understand why a person might be wrongly angry at blacks after a woman he cares about was raped by a black man. It's racist, ignorant and wrong, and I'm damn glad Neeson figured that out for himself and never acted on his feelings. What more do you want? Did he participate in a lynching we don't know about?
And it's not nature or nurture. It's both. The desire to fix problems for loved ones is hard coded into men. It's also taught to them, especially older generations, that it's your duty to protect women. It's part chivalrous and part demeaning to women because it implies they can't take care of themselves, or that their happiness and safety is something for us to grant. Almost like they are children or possessions.
So, if you think Neeson has something to pay for because of his misplaced anger, which it sounds like he got complete control over and understands was wrong, and is even willing to publicly speak about, then I don't know what to tell you.
What more do you expect?