Indeed! We must ensure that our harmonious society has no tolerance for falsehoods, only for the Truth. For the truth is... North Korea is best Korea.

To some. Without getting too deeply into philosphy, I think you'll be very hard pressed to prove any kind of threat to anything from creationism itself.

As my geologist friend pointed out, a century ago many laughed at the idea of plate tectonics, but it's now foundational to earth science. As commenters have pointed out here, we do ourselves a disservice if we do not allow the discussion of other ideas.