If an immigrant overstaying their Visa publicly declares their status to an immigration agent, they can get deported. Did this violate their right to free speech? If a person's public speech is so vile that everyone agrees to not listen to them, does this violate their right?
What we are actually talking about in this case, is morally (because of course, we have no rights to free speech in Australia) what are the acceptable restrictions that should be placed on people or businesses, to restrict others rights to speech?
And is the restricting of the right to silence others (say on your platform), in itself not a kind of restriction of right to your own speech?
This is much, much more difficult to answer consistently.