Materialists, naturalists, and atheists have a long history of denying the existence of things that don’t fit into their very narrow, limited conception of existence. God is always number one on their list of targets for denial.
But what the public doesn’t realize and atheists don’t publicize is that their naturalistic, materialistic philosophy requires the denial of much more than God. They don’t want the public at large to find out about this because then people will wake up and see what a silly picture of the world these philosophies commit one to.
For example, the strict scientific empiricism required by new atheists — the idea that the only things that exist are those observable/detectable by science — also requires denying the existence of the mind and certainly the minds of others. Science hasn’t detected the mind. Only electrical signals in the brain can be detected, but that is not the same thing as the mind.
Have you ever seen someone else’s mind? Have you experienced their inner thoughts? Have you felt their emotions? No. All we can see is external behavior. The internal mind of others is inaccessible to our perceptual faculties. So does that mean that we disbelieve that others possess consciousness like our own? If we consistently apply the standards of scientific empiricism used by atheists, that would be the inescapable conclusion.
Which is preposterous. Which is why we reject scientific empiricism and the simpleminded atheism that relies on it.