It's not about the price YOU, the customer pay. It's about the scumbaggery that these lowlives perpetrate on restaurant owners. The best one is how they impersonate the restaurants online, hijacking their online presence and setting up fake numbers as the restaurants' own.
Never use food-delivery services. Not only are they scammers, but they (and this is first-hand observation) mess with, eat, or take your food into a public shitter.