If you have a huge following and use Twitter to say without evidence "restaurant xyz uses rat meat don't go eat there, or 'Tim Cook has AIDS and will die in 3 months'", then that would be protected by free speech like the right-wingers want it.
But in the Western European model, you could be sued for making those claims and effectively hurting the restaurant, Tim Cook, and the Apple stock price.
I'd rather live in a society where that's not possible without dire consequences for the fraudulent "free speech" abuser.