Why do Atheists obscure the existence of Satan in their statement “their is no God” while they promote him?

While Atheists claim that there is no God and that all religions including those that Christianity clifies as cult religions are fallacious imaginations of the mind they propagate all of these cult religions, every form of witchcraft and even open satanic worship in society. This is a hugh sign that Atheism is a religion that promotes all forms of Satanic worship.