No one silenced anyone. No one said Hank jr could not say whatever he wants to say. But there are consequences and that is fair. He was way out of line. But this, again, is not about free speech.
When big media controls the flow of info and quashes dissent against liberal doctrine they most certainly do silence people...
If Hank Williams dissents against Obama in the middle of the forest and no one is there to hear it does he make a sound?