I dunno, I think its a good thing. I was listening to an interview on Opie and Anthony with Anthony Bourdain, and he brought up a good point about hipsters. As irritating as they are, they do a lot of good for neglected places and things. In the interview he was speaking specifically about Detroit, but would say that if you have a run down warehouse district, move some hipsters in there to remodel, live in lofts, and soon the area is revitalized. Doesn't always work, but when it does, all the better.
The same can be said about these items. While they don't have the panache of a Tiffany lamp, or other valuables you'd see on Antiques Roadshow, they certainly don't deserve to be sold for scrap, or lay out in a shed forgotten. Maybe they do cost more, but they won't forever. The upside is, it is a lot easier to find the items we love, and information about them.