You literally do not make your own schedule. You are at the mercy of what schedule they have avail or if you can actually Dash now, which can't be relied upon. Even if you can Dash in, it may only last one delivery.
To make 800 to 1k a week, you must put a lot of miles on your car.
Again genius, the average salaried worker in America is 47k. This includes people in small town America. You are barely making half that while trashing your car and spending much more on gas than them, plus no health coverage, which is a tax fine, and incredibly costly if you have health issues.
Again, it's for extra cash or emergency money. It's only a full time gig for the uneducated that can't do better.