Images of God
Images of God, or any spiritual leader, result in ascription of characteristics associated with the image selected. In the case of ancient teachers, or divine entities, no actual image exists; thus, all are false and misleading.
Most atheists don't belief in a God that doesn't, and couldn't, exist, in its simplest iteration an old white-haired man in the sky. Belief in a "supreme being" implies some sort of omnipotent and eternal being or creature, a personality.