My thinking on this is if the overall goal is to reduce atheists from joining or participating in this forum, by adding more hoops to be involved or pushed to the back of the closet, it is a good idea.
Most atheists are heavily involved in politics because they understand it is the only way to induce change of the injustices. We don't find ignoring the actual situations as something we can just pray about and hope God will do his best to fix it. Or just focusing on our beliefs is beneficial.
Many of us are also interested in understanding belief and how it relates to our family and friends and are curious about finding more clues as to the "why" of religious or spiritual beliefs.
I also know many people of faith who are heavily involved in change through civic participation.
So I believe, it would be detrimental and not helpful for traffic to the site, if politics is hidden for either religious or non religions participants.
Another idea for slowing the change in the new threads list from changing so quickly might be to limit the number of new threads which can be created by the same person in one week. To me, that would better slow the rate of the new threads list without showing favoritism to the religious who have no interest in changing the world through actual participation in politics.