Earlier quoted context omitted.
Private entities can put restrictions on their private space, but doing so implies that they no longer provide the same freedom of speech guaranteed to citizens on public spaces, so they are indeed restricting the freedom of speech.
...and now we've touched on a fundamental philosophical question: is freedom of speech a natural right or a legal right? There's also potentially an assumption here that free speech is overall reduced through restrictions on it. As a thought experiment: suppose that, within a society of _n_ people, some small _k_ of them are "louditarians": they believe that part of the right to free speech is the inalienable right t…
Generally freedom of speech issues arise largely for written word, than the spoken word.