I predicted that would happen. For a pro-witless forum to remain pro-witless, they have to have strict rules (and, believe me, they are a LOT stricter than anything on this forum ever would be). Every post that doesn't match the current understanding of the Washtowel Slaveholdery has to be modified or deleted. Older posts have to be edited every time there is "new light", with the editing stamp removed so people cannot tell that it was edited. Otherwise, there would be nothing to stop people from going back to early posts and finding that the whole religion is a scam.
Those boards have two choices. One, they can remain pro-witless. If they do that, they will sound like a boasting session chat, and soon fizzle. Those kinds of boards tend to have few innovative posts, and the mods have a lot of work to clean up and update topics and posts--any derogatory terms against the religion, anything that could expose the religion as a fake, or any God-hating discussion has to be removed to preserve the illusion that it is the true religion (and the posters eventually banned, to keep them from "polluting" the board with things that could get active witlesses to think). It is extremely high maintenance, and the boards tend to die out when the Filthful and Disgraceful Slavebugger cracks down on that kind of discussion boards.
Or, they can change. They can start accepting critical comments against the religion. As such, they can grow. Some become Christian discussion boards for general Christian discussion. Others become a forum to discuss the religion, and other religions, from both sides of the story. Relatively few become a free-for-all, and the ones that do usually fizzle.