"I can't believe that anyone would be that superficial."
Religion is hardly superficial to many people.
I would have serious qualms about voting for a devout Shiite Muslim, to use an extreme example.
Or a Scientologist, as I would doubt their sanity.
OK, when was the last time you saw members of the Church of Jesus Christ of Latter-Day Saints shouting "JOSEPH SMITH AKHBAR!" and detonating a bomb vest?
Or, for that matter, a Scientologist shouting "L. RON HUBBARD AKHBAR!" and flying an airplane into a building?
I'm the sort who judges people by their conduct, not by what building they worship in.
The Shiite Muslim might be a problem, but you'd have to define "devout," because if you think FR is a fractious flame-flinging lot over who is and isn't a RINO, Islam is getting that way over who is and isn't a MINO, and those disputes tend to get lethal.