I'm not suggesting that regulation is the answer here, or always the answer. But, the case of moral blame is not the same as describing the problems of large portions of the population. So what if we all agree it's the individual's fault that obesity has been on the rise for decades? Does the blame here modify the severity of the problem, or prescribe an outcome? How useful is moral blame really, when it comes to societal problem?
If an "article" claims that exercise and vegetables are bad for you and that Brawndo is nutritionally complete, then it's tough luck for the idiot who chooses their lifestyle based on that post.
On the other hand, when the "Dey Turk Er Jurbs" crowd are persuaded to get the (metaphorical or literal) pitchforks out, then the tough luck falls on other people, regardless of the commitment to truth that those unlucky people have.
It is not my responsibility or even within my power to determine the veracity of what other people read, but other people can make decisions based on misleading content that have a negative effect on my life.
It is a tricky question, how to deal with "bad" content without putting too much power to define "bad" into the hands of either a nefarious or an incompetent actor who could make the problem worse. But you're just shrugging and blaming those who have been lied to for not spotting the lie.
You still have a source of coercive influence making the act of journalism possible. Editor's want a spin, networks want truth massaged to optimize viewer metrics, to keep the financials healthy, so on and so forth.
Truth/neutrality is not highly incentivized in our current social structure.
(I know in some parts of the world that's a controversial statement.)
Why shouldn't society work for the benefit of the more vulnerable? Whether it's those unable to provide their own healthcare or able to verify their own facts (for example, in situations where Facebook is literally the only access to corroborating information)?
You could make the argument for whether or not Facebook should be that authority but the analogy of government providing a safety net does not hold up.
Facebook _is_ censoring and editorializing, full stop. Should societies not even attempt to fight back?
"Never infringe on liberties" is not a workable plan. The question is when those infringements are worth it.
The platform is optimized for engagement and thus “virality” rather than “organic” spread and diffusion.
If anti-vaxx sentiments remained in its tiny circle and didn’t spread beyond, that would be good.