According to Redcream's logic, Germs didn't exist until the microscope was invented. An other galaxies didn't exist until we made telescopes powerful enough to detect them.
Redcream is an utter "naive realist." Atheism is the exact same belief system as theism, rotated 180 degrees. It still relies on belief, making it absolutely unscientific, making redcream a walking (or at least typing) contradiction.