I am already aware that what Young Earth Creationists claim includes the supernatural. Whatever mainstream science can demonstrate, they are not going to believe it because they are using a different framework for reality than you are. Science has no means of knowing if they are correct - because they include the supernatural - the only means of testing that are beyond the scope of science. You seem to regard the physical as the only absolute objective reality, this is a philosophical position, it is not demonstrable with science itself - it is actually an opinion. It is not an impossible opinion to understand, but it is nevertheless only your perspective on what science is.
What Young Earth Creationists regard as a supernatural phenomenon you regard as "imaginary" - they do not use that word to represent their own thinking, you are regarding it as that based on your own framework for perceiving reality.
Some people do not believe in any objective reality, including physical things.