Well, even Christian denominations have "trouble" other denominations emphasizing certain verses...handling snakes in Mark...or Heb. 6:4-6 for the once-saved, always-saved crowd...
The issue is NOT Biblical unanimity or uniformity before you let anybody touch you within 10-foot pole space.
The issue is that Joseph Smith declared spiritual war on all Christian sects back in the 1830s. Mormons then enshrined that initial vision into "scripture" in the 1870s. (IOW, it's not just mere "opinion" status...Beck can't play fast & loose with either Mormon "scripture" nor the heart of its "scripture" -- its supposed initial vision upon which the faith is based).
So, yes, folks will "militate" vs. very specific Scriptural passages. (We all, frankly, have wrestled with one or another or a lot at various times in our lives). That's not the point.
The point is "Do you invite somebody who at their very core thinks of you as a Christian apostate?"
If a Muslim started believing all the things Beck believes, started espousing them as a radio talk show talkinghead, but still believed all Christians are "infidels" like Muslims do, does that effect whether he gets an invite or not?
I wouldn’t do it were I in charge of Liberty U., but my point is that they are willing to invite conservatives, without regard to their faith belief. But then, it’s common in this day & age for Christian organizations to blend into and/or look like the world.