Which is extremely wise advice honestly. This lawsuit is a bit muddled and less clear cut than folks have been portraying it. Speaking out in a forum like this may salve your pride but it isn't going to result in absolutely anything that's helpful legally - it can cause only harm.

(And honestly - most HNers would just take the opportunity to bash him if he showed his face, so for his mental health as well I am happy he's keeping to the shadows)