Make the social media platforms interoperable, and force them to charge the costs directly to consumers (so that the platforms could compete on price/quality) and people will run away from it like rats from a sinking ship.
My honest opinion is that most people who cry "censorship" don't care about truth or actual freedom. They just want their shit to go to the widest audience possible. I'll change my opinion when more of the "censorship" crowd acknowledges that while they strongly disagree, FB (or any other website) has every legal and moral right to "censor" them, because that's also what freedom is about. You can't be for freedom only when it favors you.
Keep in mind, I'm using the scare quoted version of censorship because all of my examples are censorship by definition. But no reasonable person would find anything objectionable in them, let alone "inherently evil".
I can't (and won't) stop you from saying whatever you want. But I don't have to let you be on my property to say it. I respect your freedom to say what you want. Please respect my freedom to enforce codes of conduct on my property.
This phrase is key. The public square is supposed to be 100% censorship free. Facebook stole the public square from us, and is now censoring it as if it were legitimately private property.
How? Do they control the Internet or the Web somehow? You and I are talking on a non-FB property right now.
And even if it were true, I point you back to my previous comment: https://news.ycombinator.com/item?id=29726412
All of this "censorship" scare-mongering has the potential to turn into a slippery slope that could seriously erode property rights online. Fix the actual problem, rather than whatever's most convenient for you at the moment.