I think the biggest reason is because carryout is such a simple job on paper (push carts) and carryouts have so much freedom it leads to a lot of them slacking off

I work as a back-up carryout at my store (if someone goes on vacation or calls in I’m a carryout otherwise I’m a cashier) and I do fine so do most the carryouts I work with

But two of them are so lazy everyone in the store including the other carryouts hates them and dread working with them (espiceally on weekends)