I see where PKM is coming from. LDS (particularly those born and raised in Utah) are sheltered to an extent from the world the rest of us see.
I would agree with you, to a certain extent. But you make it sound like LDS folk are pretty much Amish. That just isn't the case. We live and work in the real world just like everybody else. There is a difference in that LDS people are less likely to experience some of the things that others do, but it isn't because they just flat out aren't aware. They make choices.
Regardless, I don't think that one's perspective, no matter how sheltered it may be, should be excluded in a discussion in an open forum. If you feel like that perspective is based in misinformation or misunderstanding, disagree and move on.