Mormons could possibly be the softest targets in existence
That's not what he means but to your point, from what I understand LDS has specific rules against parishioners carrying concealed in the Church which is one the most asinine things I've heard.
More and more Christian Churches and synagogues (except Islam, go figure) are under attack in this country. Most you don't even hear about and there are a lot of Church's that don't take there security as a main priority like they should. Islam extremists already have orders in this country to attack Christian Churches and synagogues by way of ramming vehicles, firebombs, guns, knives and blades in general, incendiary devises, etc.
I've wrote a comprehensive plan for Church security a couple of years ago when abortion groups were busting in on churches and threats were being made against Catholic Churches. If anyone wants copy of it, hit me up.