>What message does that send to the customers in line? "You're less important than delivery orders", and I can tell you that isn't the case due to the large chunk that DD takes.

I noticed a more extreme version of this while traveling in mainland China. Takeout shops, especially bubble tea shiops, that were genuinely pleasant a decade ago now seem entirely beholden to delivery algorithms and their productivity targets, with walk-in customers reduced to an afterthought. I once waited a half hour in the rain for a bubble tea while delivery orders repeatedly jumped ahead throwing their QR codes in people's faces; the moment I requested a refund, my order was suddenly next. I don't particularly blame the staff, but they weren't apologetic and I was really bothered that algorithmic metrics were prioritized at the expense of basic social courtesy. Watching those incentives gradually erode everyday social norms was genuinely depressing.