I believe that the statement about "even frozen vegetables are sprayed with wheat" is completely and utterly false. If a food product is sprayed with wheat, as is sometimes done with frozen french fries, then wheat must be listed as an ingredient (in the USA) under law.
When I see frozen french fries that have been sprayed with wheat, which is done to promote the Golden Brown Delicious appearance, I also see wheat listed ass an ingredient. By a logical extension, when I do not see wheat listed as an ingredient I'm inclined to form a preliminary opinion that there is no wheat added.
So the way to demystify this latest false alarm about frozen vegetables is to apply Rule Number One: always read the label.
There is a great deal of misinformation circulating in the celiac community, and some of these myths occasionally spin out into the press. For example, earlier this week I read another newspaper article that claimed that salt contained gluten. The article just glibly stated that salt contained gluten, as if this was always the case, then went on to some other exaggerations. Salt is a simple chemical compound containing sodium and chlorine.
People with celiac disease already have a hard enough time avoiding gluten as it is. Publishing ludicrous claims without doing any fact checking does not help.