Since the hot mess that was 2016 on Facebook went down, I've been pondering this a lot.
Facebook was an effective rear view mirror, for a whole lot of us. The more savvy among us could see the storm clouds gathering on the horizon literally almost since the beginning , but certainly by late 2014/early 2015 it was plainly obvious that psyops were afoot, though even to a lot of plugged in hackernews type people the full-blown industrial scale of it all wasn't immediately obvious.
That's whats so insidious. It's the model. It's the first person perspective that facebook locks you into. It looks like reality, and it contains people you know, but it is not real.
You don't really know who wrote what, who liked what, etc. There's no global view of facebook for a user. I think that's the problem.
The first person view that you're locked into with facebook, makes it trivial to manufacture the appearance of group consensus when no such thing exists in the real world (if you have access to the backend).
The problem really is facebook, not the concept of social media all together. The problem is also that Facebook knew what it was doing. They were building a political doomsday machine from the get-go, they knew that's what they were doing, and they designed specifically to that goal for a decade with practically limitless funding.
The corollary is 30 ton tractor trailer changing lanes on the highway, and concluding that there's no traffic because it would prefer not to see it.
Censoring the rear view mirrors is a bad idea no matter how much you hate what you see in them.