Did the FSM produce inspired writings like God did with the Bible?
A Bible that is supported by external evidences such as archeology, manuscripts and fulfilled prophecy.
Did the FSM have eye-witnesses that died preaching about the FSM?
Are you willing to die for your faith in the FSM?
I am not aware of any writings about, or by, the FSM that produces such external evidences.
Thus, comparitively, belief in the FSM would seem especially foolish.