"Free speech" doesn't mean that people are required to give you a platform or listen to you. It means that an authoritarian agency won't punish you for speaking.
Your community still may respond to your speech and hold you accountable for any deleterious impacts, such as inciting violence or willful misrepresentation. Freedom within your society means accountability to your society. If no one wants to hear your crap, its not impinging on your rights to send you offstage.
@Guyjin true. society has to cultivate a better sense of what is crap and what is not. still, doesn't change the premise about free speech.
just because people don't want to hear it, doesn't mean you have to stop speaking. but, free speech doesn't mean anyone is obligated to give you a stage.
the concept of free speech isn't a stand alone ethic. it, alone, can't stand up to oppressive dynamics. it has to be part of an anti-oppressive matrix of tools.