I mean, we murdered democracy, gave a platform to Nazis, sold your data to the maximum bidder so… kinda hard to believe a single word we say, right?

No…
Mockery of this notion that, as TechCrunch place it, Zuckerberg has abruptly “discovered privacy. ” Skepticism as typified by Mashable’s useful warning that “when the previous 15 years of Facebook have taught us anything, it is that we should not take Zuckerberg’s words at face value” and the Washington Post’s adorably credulous assert that “should [Zuckerberg’s] vision be accomplished, it’s nothing less than the epochal shift in Facebook’s business model. ”

“I know that a lot of men and women don’t think Facebook can or would even want to create this type of privacy-focused system — because honestly we don’t now have a solid reputation for building privacy protective solutions…”

The press response to Mark Zuckerberg’s memo on privacy and Facebook has largely fallen into two camps: doubt and open mockery.
Ho ho ho!
Even Zuckerberg himself confessed how hard it is to believe that Facebook cares about creating a space where users can communicate and in small numbers.