Let me tell you a crazy story and you tell me how outlandish it sounds: right now, you probably sitting down, relaxing with a can of beer. However, you’re really spinning real fast. Actually, everything is spinning fast. The whole earth is spinning, I know you don’t feel you are moving but you are. What’s more, you are not only spinning on that ball we call earth but the ball itself is spinning around another bigger ball. I know, nothing is actually moving. I must be full of it. I know, you don’t feel dizzy but…it’s true. Outlandish? Certainly. Can I prove? I am not sure. Is it true. YES!The fact that things will progress does not mean those who contradict what science and engineering tell us are almost certainly true now will be proven correct in the long run. By your logic, we aren't allowed to be hostile to any concept, no matter how outlandish, since there's always the prospect of learning something new tomorrow.
Requiring us to acquiesce to all inanities for the sake of not "assassinating" someone's character will destroy us faster than a little bit of earned animosity, I think.