AI menus and signage are quickly becoming the dog whistle for "cheap". It's telling you what kind of quality and service you should expect in the rest of their product or service. Pretty soon people will catch on, and start avoiding these places. Once that happens, generative AI image models will be hard-pressed to drop the association. It's like walking into a dollar store -- everything can be made cheaply, so it doesn't matter if something there is actually of any value.