Yeah, keeping in mind both the well known problems of censorship and also our societal shitshow driven by disinformation campaigns and other outlandish groupthink, I've got to ponder synthesis here.
I'd like to hope that most of the problem is engagement amplification - eg social media's "algorithmic" editorialization for which they're not even S.230 immune (yet no one has taken them to task). Would things be so polarized if these companies didn't create personalized filter bubbles to drive engagement? Traditionally one's professed opinions had to survive in the scrutiny of the larger social sphere. Now no matter what you say, you're immediately given a soapbox and a tiny receptive audience.
In the long run, big social media like Facebook can only end up being lame, exactly how the nightly news has been - "the revolution will not be televised". Mass media inherently caters to the status quo, because at the very least it's owned by people with a vested interest in maintaining the status quo. Which points to increased routine filtering that keeps conversation within a nice small Overton window as it has traditionally been - that is to say, lame. In a way the rise of Zuck is an aberration indicating that when you get insanely powerful, there is no large mahogany table of stuffy old guys that sits you down and immediately brings you into their conspiracy "or else" - rather the overall dynamic happens slowly.
I also hope there is a growing up process being done by non-internet-natives newly buffeted by raw unfiltered media, en masse. Twenty years ago I was exposed to chemtrails theories, NSA mass surveillance, 9/11 was an inside job, Austrian economics, sovereign citizens - ideas that put you directly at odds with society, with differing kernels of truth (or not). No matter how much some resonated with me I was never going to start steadfastly preaching back in the real world, because the impedance mismatch was too large. Eventually you gain a sense of wisdom about the implications of these various theories and the cost of acting on them (regardless of their validity).
What I see missing today is any of this wisdom - sure vaccination could be a government sterilization campaign, but since you've made it through life so far generally trusting institutions including large corporations, perhaps following the actions implied by the conspiracy theory is imprudent. Maybe I'm being overly hopeful too, or this dynamic won't be reached because of a critical mass creating its own social proof, or it will take a few old generations to pass on and new generations steeped in the Internet's hostile noise to develop collective social wisdom.
Or maybe global communication is just the Great Filter.