There's a reason why restaurants quickly returned to physical menus: most of their customers hated QR code menus and the restaurant business is extremely competitive so you have to be responsive to what customers want to stay in business.

It's only in markets that lack competition that a company can do unpopular changes that reduce its costs without losing customers. For example, stadiums all went cashless "for your safety" and then never brought cash back. Which they can do for the same reason they can charge $5 or more for a bottle of water: they're basically a monopoly with a large captive audience.