I think it’s a net win for personal hygiene to not have to touch a menu that thousands of people have touched before you, right before you start eating. Maybe keep the QR codes, but have menus on demand for people who prefer them?
Yea you could for sure keep the printed menus, but one of the extra benefits of having an online menu is that your can keep your menu up to date with daily menus and all. Printing new menus everyday can be a struggle and is not very ECO-friendly.