Disagree, this is one of those changes that not only is very hyginic but also has a juge impact on reducing the amount of work for staff.
I won't disagree however that they could still have menus available for the instances people don't have a smartphone or are having problems with their smartphone. However, overall the impacts are mostly positive aside from incoviniencing the customer slightly to look at the menu on their phone.
That's exaxtly what I was thinking