Earlier quoted context omitted.
I don't want a Ministry of Truth filtering what I'm allowed to hear. In a functional democracy, education and robust debate are supposed to be the defenses against misinformation. Most western democracies long since scrapped proper education because it's easier to win the support of the population with propaganda^H public relations than it is to make a reasoned argument.
That point of view works in a perfect world, but there are some ideas that don't deserve a seat at the table. Drinking bleach will not cure autism, but their are desperate parents out there ready to walk into that bear trap and opportunistic people are ready to spring it.
If you don't like an idea you're free to ignore it. Freedom of speech is really about the freedom for each of us to hear. What you're really advocating is that you don't want other people to have access to ideas with which you personally disapprove. This is such an authoritarian notion that I don't understand how it has become a socially acceptable idea to espouse.