Anyone who asks the question, "Is Bush too religious?" is a bigot.
I hear you, but I think your stretching a bit. If one means "too religious" as in "too pious", then it is a fair question.
But in this case I think the author is addressing those who think that actually believing in Jesus (rather then paying empty lip service in Church) disqualifies one to be President, which I would have to agree is a rather disturbing premise.