Well, that gets into the fact that Alex Jones is listened to by a large number of people who find him entertaining but don't believe his shit as well as a small core of followers who really are paranoid wackjobs. He's not a comedian or entertainer, though, but an actual nutjob so it's probably wrong that he gets the attention he does. However, the fact is he's just exercising his freedom of speech. It's just that he has such a large forum because his ludicirousness is something people like to hear.
Honestly, if I was going to restrict the free speech of others, I'd start with a lot more believable but misleading propaganda.