You're spot on, I've been doing Doordash on an e-bike on the weekends for exercise and the wait times are BS because everyone orders lunch/dinner at the same time and they're in essentially a random queue with everyone else who orders. Add to that multiple pick ups and drop offs and you've got a mess.

Talking to people really does help though, everyone wants to be more forgiving when you remind them theirs a human factor involved in getting the food to them.