Agreex, if the burger patty is just prime ground beef or black beans and quinoa or something it's probably ok. But people like to eat food that is nice sometimes and so it's everything else, the mayo, the ketchup, the toppings, the bun, the fries, that are part of the mise en place of the burger experience and the same goes for other vegetarian meat substitutes, e.g. sausages or bacon.