This man is a pathological liar. I’m sure he believes himself what he is saying but nothing in his past actions says that he will implement these changes in a way marketed here. Facebook is a publicly owned advertising company. They charge zero cents for using the service. If he destroys the company’s profit source, shareholders will sue him.
I think Zuckerberg has repeated the "we care about your information" message too often to be taken seriously. I didn't even read the entire post, which by itself (obviously highly subjective) tells me how my perspective of Facebook and Zuckerberg changed over the years...