That is a "Headline Grabber" and it's all done to get you scared and buy their products to "save your life". It's very irresponsible. The Gluten Free Diet puts Celiac in Remission once the gut is healed. You do not continue to damage the body for your whole life. That's not to say that you'll never get any diseases or conditions through your life. 7 years undiagnosed is around the average. Some of us went 15 to 20 years undiagnosed and have permanent damage from Celiac and problems stemming from Celiac that we deal with for life.
Don't be scared Hun. Eat cleanly and you'll be fine. I'm so glad you wanted us to look at that link. I hate when sites try and scare people.