Because apparently it's not quieting if you've punished someone for saying something.
and now let me go grab my eyeballs off the floor because they just rolled out of my head.
The example given does not come close to that, but is an example of someone being censored.
In the US at least, censorship is typically brought on by pressure from sponsors and advertisers in response to public outcry.
In the US, The Freedom of Speech is heavily protected against government interference.