The rest of us call those "Massholes" or "off site storage".
Funny that is exactly how I look at them too. I was at a buddy's house for a BBQ this summer and the subject of prepping came up, a Mormon couple showed up and started talking politics, anyway he said he had a pretty good stash as did my buddy. Then I dropped the bomb of "How are you going to keep it?"

You'll loan me a gun and some ammo won't you.
Ya, sure...

Buy your own dammit! He's a good guy just has some priorities screwed up.