Maybe that's why he is largely hands-off when it comes to policing or shaping content? Not everyone agrees that the best way to manage an important communications platform is to shape the speech allowed on it.
Social networks have proven themselves so powerful, it seems unlikely their ability to wreak havoc on society will remain unlegislated forever. One day social networks will be legally responsible for the content published, and we'll see an end to the laissez-faire attitude of allowing disinfo to spread unhindered.
Except, the issue is way more nuanced than that. The reason this expression is enshrined as a protection in US jurisdiction is because we decide that free expression trumps every other social need — with the narrow exceptions as laid out in Brandenburg v Ohio (imminent lawless action).
To the extent that this is undesirable, if the political will to amend the Constitution is absent, then you'd also have a hard time convincing people that Facebook should not exercise the same principle.
Cities are paying millions to stop outbreaks of previously defeated diseases like measles and counteract disinformation primarily being spread on social networks [1]. Should social networks not be somewhat culpable for their quantifiable externalities on society?
[1] https://www.cidrap.umn.edu/news-perspective/2019/09/us-measl...
Epistemologically, where you come out on this all depends on which axiom you start from.
Also, there's a subtle difference between the existing guidelines and what you're proposing: the existing guidelines exist to maintain a positive experience directly for those consuming the platform (eg I don't want to see ISIS beheadings on FB). The new guidelines you're proposing exist solely to indirectly prevent others from seeing things you think they should not be seeing (eg I don't want my aunt to see this post). It's a very important distinction.
https://www.cnbc.com/2018/03/20/shareholders-wont-force-zuck...