I can generally order anything I want, pickup or delivery, through GrubHub. Of course they track me; I pay them and they find me at home for delivery.
But I can also sit on a bus and order from the restaurant that's at my next stop, 20 minutes away. Google Maps has become great for this, actually. You find a restaurant and you hit the "Order" button, and there's a menu of choices for who to order from. You could GrubHub, DoorDash, Uber Eats, or you could order from the restaurant's website.
Restaurant websites have variable quality, mostly very poor, unless they're a franchise, or signed up with an aggregator, but hey, it's not an app.
Fair. To each their own. I didn't make an account to use <redacted>, and the convenience of putting in my order before I walk over there means it's ready when I get there so I have more time to enjoy eating it at the park nearby.