Dashers are not employees. There is no employer obligating a Dasher to serve the business’s customers.

A waitress is an employee. Her employer can demand that she serve a particular customer. She can be fired for refusing to serve you.

A Dasher is not an employee. DoorDash cannot fire a Dasher for refusing to accept an order. The Dasher is perfectly free to decline your offer for any reason they want.

The only information the Dasher is given is the location of the pickup, the location of the dropoff, and how much you are willing to pay for the trip. From that information, the Dasher has to decide whether to take the offer, or decline.

When your offer is so shitty that it would cost more to fulfill it than you’re offering the Dasher is absolutely justified in flaming you to a crisp.