While true, he was attempting to discuss christianity and it's topics, from a non christian point of view, or perhaps to learn more about the religion.
Which apparently the board allows according to the rules posted somewhere back.
And since they do allow non christians to join, it's not pure "worship christ or GTFO", this seems to be more "agree with us or thread closed". They're just being jerks to an extent.
Now if you'll excuse me, I must jerk off to this hot statue of the virgin mary giving fellatio to a goat.