I don't see why you keep bringing up child pornography. Facebook and Twitter don't allow people to spread it, and no one is suggesting they should. It's entirel

I don't see why you keep bringing up child pornography. Facebook and Twitter don't allow people to spread it, and no one is suggesting they should. It's entirely a strawman. As for whether "one person" currently has more reach that the pamphleteers did, I also disagree. A pamphlet is only spread if people are agreeing with its content. Likewise a tweet or facebook post. A billion people post inane content every day. We see a microscopic fraction of it. That is an equivalent form of "peer review" as your pamphlet distributors.