That's not quite how accessibility regulations are structured. Wouldn't surprise me if there are requirements on this in any given jurisdiction. Perhaps not a 'thou shalt have printed menus' but some kind of reasonable accommodation I think isn't absurd.

I think it's pretty reasonable to require restaurants to spend a little money to print menus, and even a little more to get braille ones. There's millions of people who might have some difficulty or another using a browser based menu, certainly we can do better than saying "sorry, tough luck."