That's absurd on its face. The flavorings in Lorann, Flavorart and the like have been used in food for decades.
Safe for ingestion is not the same as safe for inhalation. No food flavoring has been tested for the lungs.
Listing the chemicals in e-juice is a totally valid, logical idea. It provides consumers with the ability to choose for themselves what they want to risk inhaling. Big tobacco was never required to list the chemicals in cigarettes, and we now know how many of them were known carcinogens. If e-juice manufacturers list the chemicals in THEIR product, they are doing more than just informing consumers. They are making a statement that they believe in full disclosure, thus supporting the belief that their products are safer than cigarettes AND they are diffusing the power of the FDA to claim that "what we don't know WILL hurt us."