I would say more, like defending the idea of unusual thinking or pointing out great people in history who have been thought of as crackpots, but, alas, that would make me a crackpot too.
I love a system that prevents itself from being criticized.
Let's just say that if you're trying a startup with true world-changing potential, like Google, FaceBook, YouTube, etc -- don't read the list because you're a crackpot too.
What's the old saying? Just because you are paranoid doesn't mean people aren't out to get you. Well just because you are a crackpot doesn't mean you can't change the world, either. Lots of crackpots have.