I'm going to have to disagree with you on most points of your post. Living gluten free isn't THAT hard. It is if you don't take the time to learn and research and read. There are many websites, books, and support groups that give you the information you need. Eating out does pose a challenge, but that's because of the unknown factor that restaurant kitchens have. The people working there probably have no idea what gluten is, nevermind about cross contamination. It sucks for those who have to be gluten free, but if the option is getting sick or eating at home, I know which I would choose.
You seem to give off an air that being gluten free should only be for people that have been officially diagnosed. Well, some people cannot afford the medical tests necessary for it. Most people have insurance deductables or heck, some may not insurance at all. And a biopsy isn't cheap. Nor is it necessary. If people can eat gluten free and feel better, who is to say they need some piece of paper to tell them not to eat it. It's not like a disease where there is a cure or a medical treatment. It's food! My brother has lactose intollerance. Did he go to a Dr. for a diagnosis? No he quit eating dairy! Problem solved!
I don't think telling people to try eating gluten-free is doing a disservice at all. It might make them feel better. And, I don't know about you, but I HAVE read Elizabeth Hasselbeck's book. It was the first one on celiac disease I read several months ago, and I've read many more since. She explained how she figured out she has celiac disease and she also has a Dr. that is the leading resource of research and diagnosis on celiac disease write the foreword. Not to mention the fact that she recommends people asking their Dr. to be tested. So I'm not entirely sure why you would be against her book. If anything, she has made celiac disease become a more known topic. Her book has put celiac disease on a more public level that people are responding to and can relate to.