You are completely right. Free speech does not mean that anyone will force you to listen to Alex Jones or any other nutjob. It means that AJ will have the right to speak and you can ignore him.
From the top of my head, let me just list a few of the poeople that were considered crazy and could not initialy find a platform to express their ideas:
Clair Patterson E. Cuyler Hammond Albert Einstein Marie Curie Sklodowska Nikola Tesla
You get my point?