Can we lay off the cheesy deification of PG? He was called a sexist, and he responded well. He is not a paragon of society, he is simply someone who is very good at tech and making money. And he is probably a good person too, but come on, this is just silly.
On a second note I'm also curious as to what exactly you're referring to when you say he has the credibility that should make us know that he isn't sexist. I'm not saying he is sexist, I'm just saying that all of his credibility lies in making good business decisions, not gender relations.