The problem is, this is still decietful. If this is an issue then the correct move would be to make every item on the menu 18% more expensive as a base. Because now, they still get to say “oh well our prices are still low come eat here and get “X item” for “Y price” but that’s not true anymore because of the service charge. It’s just a way to keep menu items lower in price but increase the price at the end.