What would happen if you deeply insulted a cop at night during a routine check ?
What would be the impact on your life of publicly calling names your company's CEO on social media ? You make it sound like a defamation lawsuit is peanuts, when you'd probably be fighting against an army of lawyer while you're unemployed, if you're in the US that definitely sounds like a life defining event.
I also wonder if most authoritarian régimes even have prison camps ?
In the US you wouldn't even be subject to a defamation lawsuit in the first place. Such a thing is strictly un-American, we have every right to insult mock and insult our elected officials.