My simplest solution - changing restaurants. I absolutely don't trust the security of mobile devices, won't be scanning unknown QR codes, opening websites with unknown 3rd party spying garbage nor installing spyware-infused apps in order to get a glass of wine.

I can understand why it's happening, at least:

* Don't need to purchase paper.

* Don't need to purchase or contract a printer.

* Can change the menu willy nilly.

* It's in line with the current environmentalism fad.

But that said: If the restaurant can't be arsed to provide me with requisite-free information on what god damn food they serve, I can't be arsed to provide my god damn money for their time.

Different eating culture. In China it's not uncommon to eat out every day whereas in the west it's usually an experience (unless you are eating out in McDonald's). Hence, cheap eats places tend to automate to save on costs.