I'd be ok with calling Zuckerberg a good person if anything he has ever done has indicated he's honest or open to serious change. But he's not. The pattern is pretty clear.
Ever since the Beacon fiasco he's been saying that privacy is important and that he's going to take it seriously and make changes, while every action he and those around him take moves blatantly in the opposite direction.
He's been lying every time. Year after year, over and over again, just lying straight to our face. It's not innocent, it's not naive, he's not dumb.