Speed and reach, my friend. Lynchings happened in the US a while ago, but they weren't a universal phenomenon. A platform with the speed and reach of WhatsApp makes disinformation more potent.
Nowhere in my post did I suggest human beings shouldn't be allowed to freely communicate – what I'm suggesting is that maybe we haven't built the right tools to enable that safely, and instead, we're exacerbating the "broken human beings" side of this issue.