Neil DeGrasse Tyson said it best, this is paraphrasing a bit, but allowing someone not qualified to teach a science classroom a platform to spread a false message to others that may buy into it will lead to the destruction of all we have advanced to.
Not once in this thread have I said he can't believe the Earth is flat. He can believe what he wants. If he wants to think little purple squid people live inside earth and hump all day to generate the internal heat of Earth, he can. However when he starts putting that message in public where others can become infected of that toxic thought, or lack of thought, someone has to say something.