it sounds like you've got an axe to grind with the church (possibly rightfully so) so you're looking for a reason to react. I've only been on this board for about 2 years and while I see plenty of playful banter I've never seen any outright negative attitudes towards active/not active or BYU/Utah fans. The occasional Aggie fan takes a beating every now and then but that just comes with the territory, amiright? 🙂
For reals though, other than calling them ALUF's I haven't seen LDS Utah fans or LDS fans of any other school be referenced as anything derogatory. If you do happen to see one comment then I'd take it with a grain of salt because it's not how the general population of Y fans feel. Then again, I think you know that and are unfortunately choosing to be offended by it.