Actually it's very true. So if society collapses, what are YOU going to do with rounds or bars of silver? There are many industrial applications for silver - there's no arguing that - but what value would it have to a person in a situation where there is no electricity, no running water, no nothing? Silver and gold only hold real value when there is a use for it. You can't eat it, you can't use it for fuel, you can't drink it - it's worthless in any practical survival situation - and that's exactly what people may face for months or more if SHTF.
I'm well aware of it's industrial importance - and why I urged friends after Obama's election to buy it (and I was stupid and still didn't). I figured Barry was big on solar, and solar requires mirrors, and mirrors require silver.... But again, in a practical, personal setting, sivler is jewelry - and little more. Unless you're out of lead and cast bullets with it.
I think this applies more to the dollar than it would something that has value in and of itself.
I'll take my chances holding a precious metal while others take theirs holding a not so precious piece of paper.