I personally think it’s a good thing he is doing, addressing the things the wrong people might want to imitate. Admitting that being an asshat when younger was not part of what made you the “genius” people think you were. Sure, it may not seem to be enough, but this is a marathon, not a sprint.
I think the thing to remember is that being considerate to others is what we want to encourage. That is more important than punishing and shaming for past bad behaviour. So no, I’m not going to jump on the “too little, too late” bandwagon.