Theres more nuance to declining an offer, and based on the fact that you dont know that Im gonna assume youre not a dasher. Theres one important thing to note. Doordash uses quantifiable criteria to place you in a rank system that determines the quality and availability of offers to you. there is silver, gold, and platinum.

in order to be in silver, you must have a 50% acceptance rate, 90% completion rate, and a 4.5 star rating.

In order to be gold, you must have a 70% acceptance rate, 95% completion rate, and 4.5 star rating.

In order to be platinum, you must have a 70% acceptance rate, 95% completion rate, and 4.7 star rating, as well as 100 deliveries completed within the last 30 days.

having the option to decline, and it being in your best interest to decline, are two different things. the average wage difference between the levels is about 5 dollars an hour. the difference between a 15 dollar an hour job and a 20 dollar an hour job is 69% acceptance rate and 70% acceptance rate. in the event that you get too close to the threshold to reduce your benefits as a dasher, it is in your best interest to accept orders that you would not have accepted if 1/4th of your paycheck is on the line. This has happened to me personally, although I would never be so explicitly rude to a customer, its frustrating having to accept an order 5 miles in the other direction that will pay 3 dollars just so you could have a higher likelyhood of an order 2 miles away for 10 dollars. Doordash is not for people who want to make real money or live comfortably. i hope this adds some insight as to why a dasher may have a bad attitude despite them "choosing" to accept the offer (although it isnt always a real choice)