I don't know anything about the sub but usually agnostic ones where bigger on engaging in religious discussion just like most islam subs or christian subs don't really want to debate what religion is correct. Its a made up mind. I used to be very agnostic and was more into debating but now im very athiest and im no longer really searching in regards to the metaphysical because I have made up my mind its not a thing and its not as fun as debating if doctor strange could beat doctor fate in a fight.