This essay examines the validity of the argument that the alleged theological lack of state-religion separation in Islam is the reason for authoritarianism in many Muslim-majority countries. The essay criticizes this argument by showing that a) secularism, in the sense of state-religion separation, is neither a necessary nor sufficient condition for democracy; b) Islam is not an inherently and exceptionally political religion, and c) 20 out of 46 Muslim-majority states are secular. Me essay point out that rather than analyzing the so-called essence of Islam as pro-democratic or anti-democratic, it may be more effective to explore the socio-political and economic conditions that have led to democracy or authoritarianism in Muslim-majority countries.