While all of NJ is in a statistical metro area, that's an artifact of county boundaries. More of NJ than you'd think is rural, especially in the south. Salem and Cumberland still have plenty of farms, and the sparsely-populated Pine Barrens take up much of Burlington and Ocean. You could make an argument for parts of the northwest as well, though the exurban fringe has been eating into that for awhile.
I suppose so. Though my post was more a divining effort to see if NJ Christian is one of those suburbanites who claims to be rural.