At least every second month I walk out of a new restaurant I’ve discovered because they don’t even care to have it.
Employees treat you like it’s your fault that you can’t see the prices behind a Meta auth wall. They won’t even offer to read it out to you or show in a device of their own.
Nowadays, if I see a triangle-shaped cardboard with a QR code on top of each table, I’m 95% sure I will walk out of there hungry. And angry.
Even if they have QR codes, they have some paper menus or tablets.
And it's not even for people without devices or logins -- it's because phone batteries run out and they run out all the time. Restaurants don't generally make a lot of profit, and they need every customer they can get.
Do you bother to ask? Or do you just assume?
All restaurants have an "analog plan B", it's called walking in and asking for a menu. These are tiny businesses run by people who love food, not tech. It really is asking too much to expect them to work at and understand the ideas behind digital freedom, at least if you want them to serve you good food.
Notably Google Maps curates a photo set of the physical menu of basically every restaurant in the urban USA, if not everywhere. I find a lot of people don't actually know this. I never bother looking at restaurant sites anymore except for places where I know they're likely to have changed the menu (and even then it's a crapshoot, per your original point).