The delivery workers in congregate in my neighborhood are all unassuming and polite when they wait around for deliveries. Yes, I don't love when they sometimes drive up on the sidewalks, but I've been nearly hit far more often by cars than them. I really don't see why NIMBYs have an issue with this. Delivery workers aren't a group I'd consider "undesirable" in my neighborhood. They're just doing their jobs... incidentally for the people in that neighborhood.