To no one’s surprise, I don’t think it’s productive for atheists to call religious people names. You want to attack the arguments, not the people making them.
Sometimes, though, the religious people make a better case for atheism than we ever could… just by not shutting up.
The more they explain (or we expose) all their absurd beliefs, the easier it will be for others to say they don’t make sense and maybe none of it is true.
Bill at Atheist Cartoons makes the point well: