The techbro types like this sure, but it provides a valuable service not just to disabled people but also to people who live in food deserts without transport, have kids and can't deal with cooking, or just want to occasionally be lazy for a night etc etc. The concept of food delivery isn't itself exploitative in isolation.

Just tip your fucking drivers properly and treat them like human beings (I know treating hospitality staff like humans is alien to most Americans, but I can hope).