[Nathanba]

I think that's not true actually, freedom of speech absolutely implies a requirement for broadcast. Speech is in itself a broadcast, the intent is that you're supposed to be able to be heard - otherwise it would be called freedom of thought and everyone would naturally agree that that is not good enough.

We can quickly end up in a world where your ruler tells you that you have full freedom of speech just as long as this speech remains firmly inside your cranium and never leaves it.

The problem here is that the philosophical position is a bit more complex: Issues of decorum and harassment and spam exist, requiring limits on broadcast and so someone always has to judge what the true intent of your speech is. We now live in a world where people readily judge that the other side never has good intentions, therefore their speech can be forbidden. It's an intellecutal and moral problem, some people are simply incapable or unwilling to understand the other side's position or moral values to such a high degree that they reject any allowance for speech.