"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.