DoorDash is the worst of all of these types of gig services. They are expensive, late, forget to grab items from the restaurant and they are not careful with food.
After a few times using them (and getting a different delivery person every time) a chilling thought occurred to me. There is nothing preventing a driver from either eating part of your food or tampering with it. Think about that. A total stranger is completely alone* with your food with zero oversight.
Once I was at a Starbucks when I saw the strangest thing. Some dude rushes in with a carryout bag and sat at the nearest table. He opened the bag, opened one (of many) styrofoam containers and hurriedly ate only part of one meal. Then he packaged it all back up and drove away without buying anything from Starbucks.
At least in a restaurant you are dealing with employees and people are everywhere. DoorDashers work for a massive faceless corporation who has been shitty about pay and tips.
Why wouldn't they grab a bite or two?