Not to mention ordering via the app and collecting. QR code websites and tablet ordering machines are rapidly replacing humans taking your order across most restaurants, in the UK and Japan at least.
This is how I can tell neither of you have ever done gig delivery. I'll give you one guess as to how smoothly pick-up goes when there's no one at the cash register. We haven't gone full-automat yet, and I still need someone to actually hand me the order. Preferably, multiple someones, to service the multiple delivery drivers waiting for their pick-ups.
"Taking the order" means listening to their order, keying it in and taking payment. All of that is replaced by apps/kiosks, right? Of course somebody needs to pack it and send it to you.
Again, if you'd been in one of these establishments lately, you would know that all of those tasks are likely done by one person. Including the ones with kiosks (which are often broken or can't take special orders).