Makes some sense, I would assume just a receipt isn't the only way to track orders like this (it gets fed to other systems too, again from my experience working in a role like this) I can't imagine the impact is more then a slight annoyance unless you have a really old system.

Also restaurant owners suck, massively underpay their workers and treat them like they're disposable, I think they can take the 3 cent hit this amount of receipt paper actually took.