Well, allow me to temporarily put "Mormonism" aside to address your "very simple ideas," as you put it (and I agree, they are "simple").
Here, as best as I can sum up, was your simplified idea(s) -- so that you know I am indeed trying to hear out your basic points:
...whatever only serves to divide us at a time when we all need to be as united as possible...
What ends up happening here, though, is that we get different factions of people who all hate the leftism infecting our country, but instead of being united in the fight against that, they are at each others' throats over whose religion is the perfect one
What's wrong with these statements?
(1) You superimpose your own motives onto ours -- as if our "goal" was simply to erect "the perfect religion" and dismiss others as imperfect.
(2) You make the mistake Reaganaut pointed out earlier. As she said, unlike some people, we have the ability to multi-task. You make the same mistake that the John Birchers made with communism -- whereby they presented the Communists as the only ones who were declaring war on them. (Sorry, but many others had opened up fronts on us besides the communists; just like I hate to break it to you, but many others besides the leftists have opened up fronts on us).
And you also said:
...Ol' Jim allows that, presumably because the Judeo-Christian belief system is a huge part of American conservatism...
Yes. Now, in light of what you also just said -- that some of the commentary you've seen is part of a bunch of the very same useless denominational crap that I just got done saying had no useful business on a political forum -- tell me again how this statement fits with what you said earlier about how "the Judeo-Christian belief system is a huge part of American conservatism...?"
Are you saying to us thereby, "Yes, you're a huge part of the big tent -- but we just want your section of the Big Tent to say a few 'Amens!' to our political agenda & otherwise be silent" -- to quote you ("no useful business on a political forum") ... 'cause you know, you're not exactly "scoring points" with this vision of the conservative big tent.
Here you go with the novel again. All I said was stop fighting about religion so much and focus on politics. Exactly what is so difficult to understand about that? If you want to fight about religion, go bug someone else.