The techdirt article I linked cites examples of people doing exactly this.
> If Facebook were to start creating or editing content on its platform, it would risk losing that immunity
and
> If Facebook is going to behave like a media provider, picking and choosing what viewpoints to represent, then it’s hard to argue that the company should still have immunity from the legal constraints that old-media organizations live with.
This is all nonsense. Old-media organizations are protected by CDA 230 just like everyone else: they can host third party content like user comments without being liable for it.
Publishers being able to "censor" is the whole value proposition for having a publisher. You're paying for the NYT because it picks who to publish. Facebook has no special "platform" protections that anyone else doesn't get.
Many, many people seem to think that CDA 230 itself makes a distinction between "platforms" and "publishers". I even replied to someone here in this comment section:
https://news.ycombinator.com/item?id=20610778